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Introduction
America's transportation system has changed along with the nation's society
and economy. The following table puts those changes in perspective:
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| Resident population (thousands) |
226,542 |
284,797 |
| Total area (thousands of square miles)a |
3,619 |
3,718 (1990) |
| Total civilian labor force (thousands) |
106,940 |
141,815 |
| Real gross domestic productb |
$4.9 trillion |
$9.2 trillion |
| Median household incomeb,
d |
$32,661 (1984) |
$38,426 |
| Average household incomeb,
c,
d |
$34,189 (1984) |
$43,362 |
| Average household expendituresb,
c,
d |
$32,020 (1984) |
$36,070 |
| Number of households (thousands) |
80,776 |
R105,480 (2000) |
| Average life expectancy (years) |
73.7 |
P76.9 (2000) |
a 1980 data include the Great Lakes and inland and coastal water. 1990 data
include inland water only. The Census Bureau tabulates area data for the
decennial census years only.
b Expressed in 1996 chained dollars (see Glossary for definition).
c Earliest year available is 1984.
d BTS computations, Nov. 15, 2002.
Key: P = preliminary data; R = revised.
Sources: Population, area, number of households-U.S. Department of
Commerce (USDOC), Census Bureau, Statistical Abstract of United States:
2000, available at http://quickfacts.census.gov/qfd/states/00000.html; GDP-
USDOC, BEA; median household income-USDOC, Census, available at
www.census.gov/hhes/www/income/histinc/ie1.html; average household
income and expenditures, employment-U.S. Department of Labor, BLS,
available at http://www.bls.gov/cex; life expectancy-Centers for Disease
Control and Prevention, available at www.cdc.gov.
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