Figure 1,,,,,
Highway Vehicle1 Trends: 1990–2000,,,,,
(Index: 1990 = 1.0),,,,,
Year,Cars,Motorcycles,Buses,Light trucks,Commerical trucks
1990,1.00,1.00,1.00,1.00,1.00
1991,0.96,0.98,1.01,1.10,1.00
1992,0.95,0.95,1.03,1.18,0.98
1993,0.95,0.93,1.04,1.24,0.98
1994,0.96,0.88,1.07,1.30,1.06
1995,0.96,0.88,1.09,1.36,1.08
1996,0.97,0.91,1.11,1.43,1.13
1997,0.97,0.90,1.11,1.45,1.14
1998,0.99,0.91,1.14,1.48,1.25
1999,0.99,0.97,1.16,1.56,1.26
2000,1.00,1.02,1.19,1.64,1.29
1Registered vehicles.,,,,,
"SOURCES: 1991–1995—U.S. Department of Transportation, Federal Highway Administration, Highway Statistics Summary to 1995 (Washington, DC: 1997), tables MV-201 and VM201a.
1996–1997— ____. Highway Statistics 1997 (Washington, DC: 1998), table VM-1.
1998–2000— ____. Highway Statistics 2000 (Washington, DC: 2001), table VM-1.",,,,,
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