TABLE K-6 Energy Intensity by Passenger Mode: 1994–2004,,,,,,
Btu per passenger-mile,,,,,,
,Passenger cars,Light-duty trucks,Transit Buses,Aircraft (Domestic),Amtrak,
1994,"3,771","4,345","4,162","4,444","1,935",
1995,"3,721","4,538","4,155","4,382","1,838",
1996,"3,688","4,541","4,196","4,183","2,153",
1997,"3,657","4,564","4,228","4,166","2,200",
1998,"3,637","4,569","4,133","4,123","2,138",
1999,"3,672","4,612","4,044","4,049","2,107",
2000,"3,589","4,509","4,147","3,883","2,134",
2001,"3,597","3,985","3,698","3,890","2,100",
2002,"3,600","4,121","3,550","3,596",U,
2003,"3,570","4,452","3,496","3,463",U,
2004,"3,527","4,452",U,"3,297",U,
KEY: U= data are unavailable.,,,,,,
"SOURCE: Various sources, as cited in U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics 2006, table 4-20, available at http://www.bts.gov/, as of September 2006.",,,,,,