Air Carrier Profile,,,,,,,,,,,,
Financial,1960    ,1970     ,1980      ,1990      ,1994      ,1995      ,1996      ,1997      ,1998      ,     R1999      ,    P2000      ,
Operating revenues (thousand dollars),,,,,,,,,,,,
"Domestic totala,b","2,178,339","7,180,161","26,440,297","57,960,508","65,948,993","70,885,050","76,890,526","82,249,568","86,493,789","90,931,479","98,689,586",
"Majors, all services","f1,942,635","f6,272,775","g23,012,073","i53,333,552","i59,846,676","i64,317,169","i70,036,709","i74,942,391","i77,650,810","i82,615,015","i89,103,057",
"Nationals, all services","146,481","736,831","3,182,418","j4,167,552","j5,465,021","j5,935,773","j5,990,391","j6,163,458","j8,113,690","j7,789,636","j9,016,171",
"Large regionals, all services",N,N,"245,806","k459,404","k637,296","k632,108","k863,426","k1,143,719","k729,289","k526,828","k570,359",
International total,"705,938","2,109,497","6,442,144","17,990,355","22,364,429","23,433,483","25,046,820","27,318,034","26,971,289","28,106,973","30,773,164",
"Majors, all services","705,938","2,109,497","h5,976,221","i16,761,376","i19,222,842","i19,892,111","i21,524,274","i23,608,853","i23,356,233","i24,671,152","i27,532,228",
"Nationals, all services",N,N,"465,923","j901,352","j2,697,137","j3,282,606","j3,326,467","j3,376,014","j3,161,212","j3,142,217","j2,853,515",
"Large regionals, all services",N,N,N,"k327,627","k444,450","k258,766","k196,079","k333,166","k453,844","k293,604","k387,420",
Total certificateda,"2,884,877","9,289,658","32,882,441","75,950,863","88,313,422","94,318,533","101,937,346","109,567,602","113,465,078","119,038,452","129,462,750",
Operating expenses (thousand dollars),,,,,,,,,,,,
Domestic totala,"2,052,094","7,001,668","26,465,999","58,953,086","63,757,937","66,119,699","71,573,073","75,731,215","78,388,515","84,328,320","93,111,990",
"Majors, all services","1,907,785","6,256,039","g23,150,527","i54,209,401","i57,824,115","i59,721,080","i64,793,763","i68,307,270","i70,114,852","i76,506,077","i83,784,507",
"Nationals, all services","144,309","745,629","3,058,289","j4,297,823","j5,285,783","j5,750,372","j5,847,797","j6,163,923","j7,500,451","j7,299,934","j8,726,001",
"Large regionals, all services",N,N,"257,183","k445,862","k648,039","k648,247","k931,513","k1,260,021","k773,212","k522,309","k601,482",
International total,"665,660","2,065,605","6,642,095","18,914,480","21,842,021","22,335,257","24,155,203","25,249,593","25,748,752","26,307,097","29,276,999",
"Majors, all services","665,660","2,065,605","h6,171,366","i17,746,006","i18,875,302","i19,061,258","i20,807,517","i21,688,642","i22,321,441","i23,218,938","i26,268,247",
"Nationals, all services",N,N,"470,729","j853,361","j2,503,462","j3,025,707","j3,166,097","j3,253,249","j3,014,282","j2,815,341","j2,609,008",
"Large regionals, all services",N,N,N,"k315,113","k463,257","k248,292","k181,589","k307,702","k413,029","k272,819","k399,744",
Total certificateda,"2,717,754","9,067,273","33,108,094","77,867,566","85,599,958","88,454,956","95,728,276","100,980,807","104,137,267","110,635,417","122,388,989",
Inventoryc,,,,,,,,,,,,
Number of carrierse,,,,,,,,,,,,
Total domestic and internationall,55,39,66,59,80,89,90,82,R80,82,75,
Majors,N,N,14,12,11,11,12,13,13,13,14,
Nationals,N,N,18,15,23,27,31,31,R27,31,32,
Regionals,N,N,34,32,46,51,47,38,40,38,29,
Number of aircraft available for service,,,,,,,,,,,,
Total domestic and internationalm,"2,135","2,690","2,818","4,727","5,221","5,567","5,961","5,770","6,144","6,254","6,522",
Majors,N,N,"2,071","3,854","4,085","4,039","4,422","4,352","4,605","4,711","5,118",
Nationals,N,N,432,650,819,"1,143","1,167",967,"1,113","1,319","1,182",
Regionals,N,N,315,223,317,385,372,451,426,224,222,
Number of employees,,,,,,,,,,,,
Total domestic and internationall,"169,872","304,690","354,264","588,926","585,427","610,363","634,866","656,243","R696,408","728,495","732,049",
Majors,"118,189","214,021","318,973","549,100","526,379","533,313","564,631","597,953","623,389","650,267","672,294",
Nationals,"12,470","24,913","29,922","32,077","46,670","59,444","56,586","47,662","R59,620","68,138","56,056",
Regionals,N,N,"5,369","7,749","12,378","17,606","13,649","10,628","13,399","10,090","3,699",
,,,,,,,,,,,continued,
Air Carrier Profile continued,,,,,,,,,,,,
Performance ,1960    ,1970     ,1980      ,1990      ,1994      ,1995      ,1996      ,1997      ,1998      ,     R1999      ,    P2000      ,
Aircraft revenue-miles (thousands),,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
"Certificated, all servicesa","n858,451","n2,067,598","o2,523,375","p3,963,263","p4,379,830","p4,629,394","p4,811,453","p4,910,948","p5,034,691","p5,332,483","p5,645,804",
"Major, all servicesa","716,961","1,778,065","2,113,669","q3,547,339","q3,760,064","q3,953,287","q4,083,664","q4,191,113","q4,260,052","q4,598,092","q4,784,789",
"Nationals, all servicesa","94,794","247,055","330,528","r351,946","r519,312","r569,641","r614,519","r594,241","r702,913","r668,646","r796,777",
"Large regionals, all servicesa",N,N,"56,995","s60,542","s78,573","s85,363","s96,573","s112,682","s51,199","s47,438","s45,651",
International,,,,,,,,,,,,
"Certificated, all servicesa","181,605","474,666","t400,971","u760,338","u979,765","u997,658","u1,043,313","u1,113,816","u1,192,489","u1,225,218","u1,272,885",
"Major, all servicesa",N,N,"330,391","v666,231","v809,242","v822,283","v859,483","v917,109","v1,003,726","v1,053,219","v1,115,278",
"Nationals, all servicesa",N,N,"66,499","w48,812","w119,839","w141,870","w150,147","w145,821","w145,494","w138,135","w125,806",
"Large regionals, all servicesa",N,N,"2,948","x60,542","x41,067","x27,761","x22,519","x47,138","x40,398","x29,474","x27,520",
"Medium regionals, all services,",,,,,,,,,,,,
Domestic and internationala,N,N,"23,204","y9,017","y31,500","y28,847","y27,861","y16,660","y21,024","y22,697","y22,868",
Total certificateda,"1,040,056","2,542,264","2,924,346","4,723,601","5,359,595","5,627,052","5,854,766","6,024,764","6,227,180","6,557,701","6,918,689",
Aircraft revenue-hours,,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
"Certificated, all servicesa","3,672,900","5,133,161","o6,247,795","p9,717,375","p10,721,374","p11,378,134","p11,871,886","p12,060,253","p12,445,483","p13,091,273","p13,839,361",
"Major, all servicesa","2,802,317","4,066,480","4,941,327","q8,524,236","q8,864,840","q9,257,260","q9,584,525","q9,828,418","q9,957,390","q10,863,178","q11,309,022",
"Nationals, all servicesa","606,146","908,935","919,187","r1,016,491","r1,579,771","r1,839,835","r1,981,219","r1,882,975","r2,299,916","r2,053,335","r2,373,156",
"Large regionals, all servicesa",N,N,"267,522","s167,826","s223,951","s223,007","s260,985","s315,506","s143,197","s126,602","s110,686",
International,,,,,,,,,,,,
"Certificated, all servicesa","608,736","977,325","t819,518","u1,556,760","u1,978,381","u2,021,060","u2,113,467","u2,235,441","u2,394,095","u2,456,726","u2,574,483",
"Major, all servicesa",N,N,"668,199","v1,351,349","v1,607,155","v1,634,465","v1,712,416","v1,819,583","v1,992,776","v2,090,817","v2,223,900",
"Nationals, all servicesa",N,N,"140,329","w101,533","w251,902","w314,066","w329,311","w309,948","w311,540","w290,582","w283,008",
"Large regionals, all servicesa",N,N,"7,583","x88,641","x97,967","x59,572","x48,619","x97,304","x83,437","x62,658","x58,565",
"Medium regionals, all services,",,,,,,,,,,,,
Domestic and internationala,N,N,"123,411","y24,059","y74,169","y70,989","y68,278","y41,960","y51,322","y60,827","y55,507",
Total certificateda,"4,281,636","6,110,486","7,190,724","11,298,194","12,699,755","13,399,194","13,985,353","14,295,694","14,839,578","15,547,999","16,413,844",
Revenue passenger-miles (thousands),,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
"Certificated, all services","31,098,944","108,441,978","o204,367,599","p345,872,950","p388,398,689","p403,887,802","p434,651,687","p450,612,482","p463,262,198","p488,356,869","p515,367,414",
"Majors, all services","29,430,428","99,903,229","182,984,795","q327,112,620","q352,063,855","q368,701,100","q395,099,254","q410,906,050","q421,217,665","q451,399,646","q472,284,794",
"Nationals, all services","1,170,779","7,642,071","20,466,712","r16,756,818","r31,339,182","r29,255,179","r33,000,546","r33,241,082","r37,699,063","r33,267,469","r39,335,123",
"Large regionals, all services",N,N,"711,868","s1,752,615","s3,757,414","s4,381,267","s5,443,071","s5,778,338","s3,124,802","s2,627,816","s2,729,491",
,,,,,,,,,,,continued,
Air Carrier Profile continued,,,,,,,,,,,,
Performance (continued),1960    ,1970     ,1980      ,1990      ,1994      ,1995      ,1996      ,1997      ,1998      ,     R1999      ,    P2000      ,
International,,,,,,,,,,,,
"Certificated, all services","n8,950,672","n39,695,392","t63,354,387","u126,362,697","u149,107,689","u154,869,249","u161,512,010","u169,356,100","u172,255,197","u180,269,038","u192,611,975",
"Majors, all services",N,N,"54,318,160","v118,268,507","v133,299,897","v137,986,520","v145,330,811","v153,564,956","v157,398,986","u168,175,060","v181,585,899",
"Nationals, all services",N,N,"8,659,592","w6,794,533","w13,459,194","w16,128,695","w14,681,127","w13,616,245","w13,471,798","w9,649,710","w7,793,324",
"Large regionals, all services",N,N,"330,288","x1,219,706","x1,964,944","x676,925","x505,337","x2,148,486","x1,097,330","x2,145,931","x3,035,864",
"Medium regionals, all services,",,,,,,,,,,,,
Domestic and internationala,N,N,"250,571","y330,848","y1,621,892","y1,627,365","y2,103,551","y713,425","y1,507,751","y1,360,275","y1,214,894",
Total certificateda,"40,049,616","148,137,370","267,972,557","472,566,495","537,506,378","558,757,051","596,163,697","619,968,582","635,517,395","668,625,907","707,979,389",
Average passenger revenue/passenger-mile,,,,,,,,,,,,
"(Domestic, scheduled service)",6.09,6.00,11.49,13.43,13.12,13.48,13.76,13.97,14.08,13.72,14.37,
Average passenger fare,,,,,,,,,,,,
"(Domestic, scheduled service)",30.01,40.65,84.60,107.86,103.21,106.66,110.37,114.10,114.34,113.75,120.24,
Revenue passenger enplanements (thousands),,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
"Certificated, all servicesa","n56,352","n153,662","o275,182","p428,767","p489,351","p506,789","p538,394","p548,735","p566,951","p589,170","p615,771",
"Major, all servicesa","48,678","122,866","223,237","q393,927","q428,328","q441,650","q466,743","q478,253","q486,903","q519,760","q537,394",
"Nationals, all servicesa","5,949","26,726","47,145","r32,015","r53,361","r55,656","r62,183","r61,316","r74,281","r65,072","r74,606",
"Large regionals, all servicesa",N,N,"3,748","s2,566","s6,138","s7,136","s7,887","s8,203","s4,352","s3,152","s2,448",
International,,,,,,,,,,,,
"Certificated, all servicesa","5,904","16,620","t26,514","u46,126","u51,330","u52,864","u54,515","u56,767","u57,759","u57,702","u60,729",
"Major, all servicesa",N,N,"23,949","v42,207","v42,702","v44,155","v46,302","v48,614","v49,610","v50,604","v53,151",
"Nationals, all servicesa",N,N,"2,343","w2,632","w6,608","w8,114","w7,401","w6,896","w7,038","w5,446","w5,272",
"Large regionals, all servicesa",N,N,149,"x1,246","x1,741",x556,x405,"x1,231",x940,"x1,404","x2,061",
"Medium regionals, all services,",,,,,,,,,,,,
Domestic and internationala,N,N,"1,125",y300,"y1,803","y2,386","y1,988",y989,"y1,586","y1,434","y1,568",
Total certificateda,"62,256","169,922","302,821","475,193","540,681","559,653","592,909","605,502","624,710","646,872","676,500",
Revenue passenger ,,,,,,,,,,,,
Load factor (%) (scheduled service),,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
Certificated,58.5,48.9,o58.0,p60.4,64.7,p65.4,p67.9,p69.1,p70.0,p69.8,p71.2,
Majors ,59.5,49.3,58.1,q60.6,65.0,q65.7,q68.5,q69.7,q70.4,q70.3,q71.6,
Nationals,41.9,43.6,58.4,r56.6,62.6,r61.9,r61.5,r63.2,r65.1,r64.7,r66.5,
Large regionals,N,N,47.7,s48.7,60.0,s56,s60.4,s60.7,s58.8,s42.4,s47.4,
International,,,,,,,,,,,,
Certificated,62.2,53.0,t62.8,u69.1,70.6,u71.8,u73.3,u74.1,u72.8,u74.4,u76.0,
Majors,N,N,62.8,v69.1,70.8,v72.1,v73.7,v74.4,v72.9,v74.5,v76.1,
Nationals ,N,N,65.5,w73.4,68.2,w67.7,w67.8,w69.6,w70.9,w73.7,w73.4,
Large regionals,N,N,73.9,x66.5,46.8,x44.5,x0.0,x64.9,x46.0,xU,X58.0,
"Medium regionals, all services,",,,,,,,,,,,,
Domestic and internationala,N,N,y46.7,y0.0,53.8,y59.3,y66.7,y49.7,y58.2,y58.3,y50.8,
,,,,,,,,,,,continued,
Air Carrier Profile continued,,,,,,,,,,,,
Performance (continued),1960    ,1970     ,1980      ,1990      ,1994      ,1995      ,1996      ,1997      ,1998      ,     R1999      ,    P2000      ,
U.S. international passenger travel,,,,,,,,,,,,
Total passenger-arrivals (thousands),,,,,,,,,,,,
Flag of carrier,,,,,,,,,,,,
United States,"z1,332","z5,531","AA10,031","AA19,145","23,291","BB24,582","AA25,148","AA26,744","AA27,390","AA27,462","AA29,837",
Foreign,"1,234","4,343","10,231","17,269","20,527","22,328","24,704","27,571","28,791","30,324","32,380",
Total passenger-departures (thousands),,,,,,,,,,,,
Flag of carrier,,,,,,,,,,,,
United States,"1,200","4,949","9,369","17,628","21,355","22,231","22,901","24,302","24,513","25,457","27,431",
Foreign,"1,136","4,147","9,886","16,418","18,993","20,795","22,884","25,382","26,350","28,399","30,068",
Total revenue ton-miles (thousands)d,,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
"Certificated, all services","n3,732,949","n13,876,802","o24,964,907","p43,651,162","50,631,589","p52,910,081","p56,326,750","p58,658,887","p60,199,459","p63,032,722","p66,297,278",
"Majors, all services","3,332,483","12,589,057","21,427,534","q39,107,033","44,952,734","q47,015,642","q50,096,661","q52,254,323","q53,424,349","q56,696,427","q59,179,586",
"Nationals, all services","121,157","850,477","3,336,057","r3,561,283","4,510,285","r4,996,345","
r231,398","r5,317,576","r6,012,665","r5,705,158","r6,429,167",
"Large regionals, all services",N,N,"180,042","s945,929","1,002,552","s718,659","s863,449","s971,942","s508,172","s507,053","s571,773",
International,,,,,,,,,,,,
"Certificated, all services","1,291,336","6,308,701","t9,689,067","u19,975,915","24,879,791","u26,295,684","u28,177,721","u30,944,299","u31,481,513","u32,810,136","u34,723,712",
"Majors, all services",N,N,"7,377,733","v17,803,825","20,681,991","v21,517,789","v22,880,295","v24,971,379","v25,794,344","v27,949,876","v30,601,951",
"Nationals, all services",N,N,"2,261,534","w1,229,849","3,201,089","w4,116,380","w4,603,920","w4,657,365","w4,376,654","w4,257,520","w3,513,451",
"Large regionals, all services",N,N,"44,438","x835,701","862,184","x513,476","x396,142","x1,240,303","x1,269,602","x566,689","x576,046",
"Medium regionals, all services",,,,,,,,,,,,
Domestic and internationala,N,N,"28,178","y143,457","300,545","y327,474","y432,606","y190,298","y265,186","y160,135","y149,016",
Total certificateda,"5,024,285","20,185,503","34,682,153","63,770,534","75,511,380","79,205,765","84,504,471","89,603,186","91,650,972","95,842,858","101,020,990",
Revenue ton-miles of freight (thousands),,,,,,,,,,,,
Domesticb,,,,,,,,,,,,
"Certificated, all services","552,756","2,708,900","o4,528,316","p9,063,864","11,802,778","p12,520,057","p12,860,845","p13,601,412","p13,839,605","p14,201,933","p14,759,988",
"Majors, all services","321,176",U,"3,129,087","q6,395,767","9,746,354","q10,145,537","q10,586,741","q11,163,518","q11,302,583","q11,556,463","q11,951,106",
"Nationals, all services","3,850",U,"1,289,510","r1,885,600","1,387,322","r2,070,570","r1,931,201","r1,993,498","r2,239,140","r2,378,206","r2,495,453",
"Large regionals, all services",N,N,"108,864","s770,670","626,842","s280,512","s318,542","s398,153","s195,791","s249,706","s298,820",
International,,,,,,,,,,,,
"Certificated, all services","n268,156","n1,566,105","t3,353,371","u7,339,660","9,970,189","u10,854,620","u12,031,634","u14,008,685","u14,262,373","u14,782,231","u15,461,273",
"Majors, all services",N,N,"1,945,660","v5,976,973","7,351,998","v7,719,138","v8,347,214","v9,614,881","v10,054,448","v11,132,370","v12,443,364",
"Nationals, all services",N,N,"1,395,575","w550,409","1,855,167","w2,549,371","w3,140,921","w3,295,738","w3,035,853","w3,291,549","w2,734,118",
"Large regionals, all services",N,N,"11,409","x713,733","666,863","x445,783","x345,609","x1,025,455","x1,159,869","x352,095","x271,216",
"Medium regionals, all services,",,,,,,,,,,,,
Domestic and internationala,N,N,"3,124","y110,372","138,421","y163,766","y222,251","y118,854","y114,294","y23,775","y27,184",
Total certificateda,"820,907","3,755,436","7,884,811","16,513,896","21,772,967","23,374,677","24,892,479","27,610,097","28,101,978","28,984,164","30,221,261",
,,,,,,,,,,,continued,
Air Carrier Profile continued,,,,,,,,,,,,
Safety,1960,1970,1980,1990,1994,1995,1996,1997,1998,R1999,P2000,
Air carrier fatalities,,,,,,,,,,,,
Operating under 14 CFR 121 (airlines),,,,,,,,,,,,
Scheduled services,N,N,CC0,CC39,239,CC166,CC342,CC3,1,12,CC92,
Nonscheduled services,N,N,1,0,0,2,38,5,0,0,0,
Operating under 14 CFR 135,,,,,,,,,,,,
Scheduled services (commuters),N,N,37,7,25,9,14,46,0,12,5,
Nonscheduled services (on–demand air taxis),N,N,105,51,63,52,63,39,R45,38,71,
Totala,DD499,DD146,143,58,327,229,457,93,R46,62,168,
Air carrier accidents,,,,,,,,,,,,
Operating under 14 CFR 121 (airlines),,,,,,,,,,,,
Scheduled services,N,N,15,22,19,34,32,44,43,48,49,
Nonscheduled services,N,N,4,2,4,2,R5,5,7,4,5,
Operating under 14 CFR 135,,,,,,,,,,,,
Scheduled services (commuters),N,N,38,15,10,12,11,R16,8,13,12,
Nonscheduled services (on–demand air taxis),N,N,171,107,85,75,90,82,77,73,80,
Totala,DD90,DD55,R228,146,118,123,R138,R147,135,138,146,,,
Fatal air carrier accidents,,,,,,,,,,,,,,
Operating under 14 CFR 121 (airlines),,,,,,,,,,,,,,
Scheduled services,N,N,0,6,4,2,3,3,1,2,3,,,
Nonscheduled services,N,N,1,0,0,1,2,1,0,0,0,,,
Operating under 14 CFR 135,,,,,,,,,,,,,,
Scheduled services (commuters),N,N,8,4,3,2,1,5,0,5,1,,,
Nonscheduled services (on–demand air taxis),N,N,46,29,26,24,29,15,R17,12,22,,,
Totala,DD17,DD8,55,39,33,29,35,24,R18,19,26,,,
KEY:  N = data do not exist; R = revised; U = data are not available.,,,,,,,,,,,,,,
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a  Totals include data not in table; thus totals may not be sum of table data. ,,,,,,,,,,,,,,
"b  Domestic encompasses operations within and between the 50 states of the United States, the District of Columbia, Puerto Rico, and the Virgin Islands. It also encompasses Canadian and Mexican transborder operations (U.S. airlines only). All other operations are considered international. ",,,,,,,,,,,,,,
"c  Includes scheduled and nonscheduled (charter) operators. By Sec. 2 of the Airline Deregulation Act of 1978 ""charter air carrier"" and ""charter air transportation"" replaced supplemental air carriers and supplemental air transportation, which were formerly Sec. 101(36) and (37) of the Act.  The 24 pre–deregulation supplemental carriers now have scheduled service authority.",,,,,,,,,,,,,,
"d  Total Revenue Ton–Miles includes Passenger, Freight, Express, and Mail.",,,,,,,,,,,,,,
e  Total includes only those carriers whose report employment statistics to BTS' Office of Airline Information.,,,,,,,,,,,,,,
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"SOURCES:  Unless otherwise noted, refer to chapter tables for sources.",,,,,,,,,,,,,,
"f  Civil Aeronautics Board, Handbook of Airline Statistics, 1969 and 1973 (Washington, DC), pp. 69, 71.",,,,,,,,,,,,,,
"g  Ibid., Air Carrier Financial Statistics, December 1981 (Washington, DC), pp. 3/28, 44.",,,,,,,,,,,,,,
"h  Ibid.,  pp. 42, 44.",,,,,,,,,,,,,,
"i  U.S. Department of Transportation, Bureau of Transportation Statistics, (pre-1995, U.S. Department of Transportation, Research and Special Programs Administration),  Air Carrier Financial Statistics, (Washington, DC: Annual December issue) p. 3.",,,,,,,,,,,,,,
"j  Ibid., p. 37 and similar pages in earlier editions.",,,,,,,,,,,,,,
"k  Ibid., pp. 75-76 and similar pages in earlier editions.",,,,,,,,,,,,,,
"l  U.S. Department of Transportation,  Bureau of Transportation Statistics, Office of Airline Information, http://www.bts.gov/oai/employees/employcov.html as of Aug. 15, 2001.",,,,,,,,,,,,,,
"m  Ibid., personal communication, Aug. 17, 2001.",,,,,,,,,,,,,,
"n  Civil Aeronautics Board, Handbook of Airline Statistics, 1973, (Washington, DC), Part III, Tables 2, 4, 7, 13.",,,,,,,,,,,,,,
"o  Ibid.,  Air Carrier Traffic Statistics, December 1981 (Washington, DC), pp. 2, 5, 46, 84.",,,,,,,,,,,,,,
"p  U.S. Department of Transportation, Bureau of Transportation Statistics, (pre-1995, U.S. Department of Transportation, Research and Special Programs Administration), Air Carrier Traffic Statistics, (Washington, DC: Annual December issue), p. 2.",,,,,,,,,,,,,,
"q  Ibid., p. 5. ",,,,,,,,,,,,,,
"r  Ibid., p. 64 and similar pages in earlier editions.",,,,,,,,,,,,,,
"s  Ibid., p. 145 and similar pages in earlier editions.",,,,,,,,,,,,,,
"t  Civil Aeronautics Board,  Air Carrier Traffic Statistics,  December 1981 (Washington, DC), pp. 3, 6,  85, 115.",,,,,,,,,,,,
"u  U.S. Department of Transportation, Bureau of Transportation Statistics, (pre-1995, U.S. Department of Transportation, Research and Special Programs Administration), Air Carrier Traffic Statistics, (Washington, DC: Annual December issue), p. 3.",,,,,,,,,,,,
"v  Ibid., p. 6 ",,,,,,,,,,,,
"w  Ibid., p. 65 and similar pages in earlier editions.",,,,,,,,,,,,
"x  Ibid., p. 146 and similar pages in earlier editions.",,,,,,,,,,,,
"y  Ibid., p. 190 and similar pages in earlier editions.",,,,,,,,,,,,
"z  U.S. Department of Justice, Immigration and Naturalization Service, Report of Passenger Travel Between the U.S. and Foreign Countries, 1960, 1970 (Washington, DC).",,,,,,,,,,,,
"AA  U.S. Department of Transportation, Research and Special Programs Administration, U.S. International Air Travel Statistics (Washington, DC: Annual issues), tables IIa and IId.",,,,,,,,,,,,
"BB  U.S. Department of Commerce, International Trade Administration, U.S. International Air Passenger Statistics Report, Calendar Year 1995, (Washington, DC), tables IIa, IId.",,,,,,,,,,,,
"CC  National Transportation Safety Board, Internet site http://www.ntsb.gov/aviation/stats.htm as of Aug. 2001, tables 6 through 9.",,,,,,,,,,,,
"DD  Ibid., personal communication.",,,,,,,,,,,,
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