Figure 15 Index of Key Air Pollutant Emissions from U.S. Transportation: 1975-2000

(Index: 1975= 1.0, 1990 = 1.0 for PM-2.5 and ammonia)

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Key: PM-10 and PM-2.5 = airborne particulates of less than 10 microns or 2.5 microns in...

Figure 14 U.S. Carbon Dioxide Emissions from Energy Use

(Million metric tons of carbon)

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Figure 14 U.S. Carbon Dioxide Emissions from Energy Use

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Key: P = preliminary; R = revised.

Notes: One ton of carbon equals 3.667 tons of carbon dioxide gas. Electric utility emissions are spread across end-user sectors...

Figure 13 New Passenger Car and Light Truck Sales: Model Years 1978-2001

(Millions)

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Figure 13 New Passenger Car and Light Truck Sales: Model Years 1978-2001

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Notes: Data are based on Environmental Protection Agency definitions of light trucks (gross vehicle weight 8,500 pounds or less). 2001 data are preliminary.

Figure 12 New Passenger Car and Light Truck Fuel Economy Averages: Model Years 1978-2001

(Miles per gallon)

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Figure 12 New Passenger Car and Light Truck Fuel Economy Averages: Model Years 1978-2001

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Source: USDOT, National Highway Traffic Safety Administration, Automotive Fuel Economy Program: Annual Update Calendar Year 2001, September 2001,...

Figure 11 Average Household Expenditures by Major Category: 2001

(In current dollars)

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Figure 11 Average Household Expenditures by Major Category: 2001

(In current dollars)

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a Includes entertainment, personal care products and services, education, tobacco products and smoking, and miscellaneous.

...

Figure 10 U.S. Gross Domestic Product by Major Societal Function: 2001

(Percent)

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