Table 10,,,,,
"Fuel Efficiency of Heavy Single-Unit Trucks, 1980–2002",,,,,
Year,Registrations (thousands),Vehicle Travel (million miles),Fuel Use (million gallons),Fuel Efficiency (miles per gallon) [(2)/(3)],
, '(1), '(2), '(3),(4),
1980,"4,374","39,813","6,923",5.8,
1981,"4,455","39,568","6,867",5.8,
1982,"4,325","40,658","6,803",6.0,
1983,"4,204","42,546","6,965",6.1,
1984,"4,061","44,419","7,240",6.1,
1985,"4,593","45,441","7,399",6.1,
1986,"4,313","45,637","7,386",6.2,
1987,"4,188","48,022","7,523",6.4,
1988,"4,470","49,434","7,701",6.4,
1989,"4,519","50,870","7,779",6.5,
1990,"4,487","51,901","8,357",6.2,
1991,"4,481","52,898","8,172",6.5,
1992,"4,370","53,874","8,237",6.5,
1993,"4,408","56,772","8,488",6.7,
1994,"4,906","61,284","9,032",6.8,
1995,"5,024","62,705","9,216",6.8,
1996,"5,266","64,072","9,409",6.8,
1997,"5,293","66,893","9,576",7.0,
1998,"5,414","67,894","9,741",7.0,
1999,"5,763","70,304","9,372",7.5,
2000,"5,926","70,500","9,563",7.4,
2001,"5,704","72,448","9,667",7.5,
2002,"5,651","75,887","10,305",7.4,
Growth Rates - Average Annual Percentage Rates,,,,,
1987–2002,2,3.1,2.1,1,
1987-1995,2.3,3.4,2.6,0.8,
1995-2001,2.1,2.4,0.8,1.6,
2001-2002,-0.9,4.7,6.6,-1.3,
"Source: U. S. Department of Transportation, Federal Highway Administration, Highway Statistics 2002, Washington, DC, 2003, Table VM1 and annual. (Additional resources:  www.fhwa.dot.gov)",,,,
Note: Heavy single-unit trucks include all single-unit trucks which have more than two axles or more than four tires.  Most of these trucks would be used for business or for individuals with heavy hauling or towing needs.,,,,