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Statistics published in this Pocket Guide to Transportation come from many different sources. Some statistics are based on samples and are subject to sampling variability. Statistics may also be subject to omissions and errors in reporting, recording, and processing.
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America's transportation system continues to change along with the population, work force, and economy. The following table puts those changes in perspective:
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Context 1990 2009 Resident population (thousand) 248,791 307,007 Total...Air carrier: Certificated provider of scheduled and nonscheduled services.
Chained dollars: A method to measure real changes in dollar values between years; uses chain-type indexes, rather than constant dollars. The method first calculates the real changes between adjacent...
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Million barrels per day
Year Transportation Industry Buildings Utilities 1975 8.95 4.04 1.95 1.39 1976 9.37 4.45 2.12 1.52 1977 9.76 4.82 2.14 1.71...Excel | CSV | Table Version
Million barrels per day
Notes: The 2009 data are preliminary. Data for all other years are revised.
Source: U.S. Department of Energy,...
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Million barrels per day
Year Transportation consumption Total consumption Total production 1975 8.95 16.32 10.01 1976 9.37 17.46 9.74 1977 9.76 18.43 9.86...Excel | CSV | Table Version
Million barrels per day
Notes: The 2009 data are preliminary. Data for all other years are revised.
Source: U.S. Department of Energy,...
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Miles per gallon
Year Cars Light Trucks 1985 27.6 20.7 1986 28.2 21.5 1987 28.5 21.7 1988 28.8 21.3 1989 28.4 21.0...Excel | CSV | Table Version
Miles per gallon
Notes: Fuel economy is miles divided by gallons. All data are revised.
Source: National Highway...
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Index: 1990 = 1.0
Year Carbon monoxide Nitrogen oxide Volatile organic compounds PM-10 PM-2.5 Surfur dioxide Ammonia 1990 1.00 1.00 1.00 1.00 1.00...