Table 2 Composition of the Transportation Margins: 1971–1996,,,,,,,,,,,,
"Millions of Canadian dollars
",,,,,,,,,,,,
Transportation margins,1971,,1976,,1981,,1986,,1991,,1996,
,Dollars,%,Dollars,%,Dollars,%,Dollars,%,Dollars,%,Dollars,%
Air ,66,1.9,128,1.9,590,5.2,508,3.3,512,3.2,512,2.5
Other services incidental to transportation,44,1.2,236,3.6,534,4.7,994,6.4,"1,065",6.7,"1,481",7.2
Water ,421,11.9,986,14.8,"1,053",9.2,"1,004",6.5,"1,250",7.9,735,3.6
Services incidental to water transportation,147,4.1,296,4.5,380,3.3,588,3.8,520,3.3,258,1.3
Railway,"1,479",41.7,"2,396",36.1,"4,162",36.4,"4,838",31.1,"4,761",29.9,"5,605",27.3
Truck,"1,457",41.1,"2,729",41.1,"5,292",46.3,"8,143",52.3,"8,320",52.3,"12,446",60.6
"Total inputs, transportation margins","3,548",,"6,643",,"11,421",,"15,567",,"15,916",,"20,525",