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1980 1985 1990 1995 1996 1997 1998 1999 2000 TOTAL U.S. resident populationa (thousands) 226,546 237,924 248,791 262,803 265,229 267,784 270,248 272,691 281,422 Ageb (...Excel | CSV
1970 1975 1980 1985 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 TOTAL motor vehicles 8,298 6,576 10,137 9,829 11,073 10,850 12,781 8,413 12,369 10,332 10,811 12,509 11,665 11,664 14,299...Excel | CSV
Year Exposure U.S. resident population (millions) People (thousands)R Percent of U.S. resident population 1975 7,000 3.25 215.5...Excel | CSV
Unknown 1970-79 1980-89 1990 1991 1992 1993 1994 1995 1996 1997 1998 Total 1970-98 TOTAL length 6 175 575 63 R98 R142 R86 R89 125 49 78 137 1,623 Type I barriersa d6 102 419 44 78 113 62 48 87...Excel | CSV
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 Total confirmed releases 87,528 R126,816 184,457 237,022 270,567 303,635 317,488 341,773 371,387 397,821 412,392 418,918...Excel | CSV
Source 1985 1990 1995 1996 1997 1998 1999 2000 Incidents Gallons spilled Incidents Gallons spilled Incidents Gallons spilled Incidents Gallons spilled Incidents Gallons spilled Incidents...Excel | CSV
Sector 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000P Total U.S. CO2 Emissions from energy use by sector 1351.7 1336.0 1358.7 1384.8 1408.8...Excel | CSV
Ref. no. States Consolidated nonattainment area name a Number of areas in nonattainment c,d Area...Excel | CSV
All sites Trend sites Total number of sitesR AQI days > 100 (2001) Number of...Excel | CSV
1970 1975 1980 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 TOTAL all sources 220.88 159.67 74.16 22.89 14.77 7.68 7.05 5.49 4.98 4.17 3....