Figure 14 Index of Key Air Pollutant Emissions from U.S. Transportation: 1990-2003

Index: 1990 = 1.0

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

Notes...

Figure 13 U.S. Carbon Dioxide Emissions from Energy Use: 1985-2004

Million metric tons of carbon

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Figure 13 U.S. Carbon Dioxide Emissions from Energy Use: 1985-2004

Million metric tons of carbon

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Notes: 2000-2003 data are revised from previous editions. 2004 data are preliminary.

One ton of carbon...

Figure 12 New Passenger Car and Light Truck Fuel Economy Averages: Model Years 1978-2003

Miles per gallon

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Figure 12 New Passenger Car and Light Truck Fuel Economy Averages: Model Years 1978-2003

Miles per gallon

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Note: 2002 and 2003 data are revised from the previous edition.

Source: U.S. Department of...

Figure 11 New Passenger Car and Light Truck Sales: Model Years 1985-2005

Millions of vehicles

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Figure 11 New Passenger Car and Light Truck Sales: Model Years 1985-2005

Millions of vehicles

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

Figure 10 Transportation Services Index (TSI)

(Seasonally Adjusted)

Chain-type Index: 2000 = 100 (Yearly average based)

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Figure 10 Transportation Services Index (TSI)

(Seasonally Adjusted)

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Notes: 2005 data are through May. March-May 2005 data are preliminary. The TSI total is a single index measure of monthly output of for-hire transportation...

Figure 9 Average Household Expenditures by Major Spending Category: 2004

(Current dollars)

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