(Billions of dollars)
|Total in current $||21,222||22,578||22,894||23,553||24,319||25,564||26,777||28,173||29,997||30,636||31,677|
|Total in constant 1987 $||17,700||18,282||17,998||18,048||18,121||18,514||18,952||19,635||20,455||20,400||20,319|
NOTE: Although current dollar values in most other sections of this book have been converted to chained 1996 dollars, these data are presented in constant 1987 dollars. The Federal Highway Administration, which collects the data, adjusts current dollar data to constant 1987 dollars using an index that they have designed for that purpose.
SOURCE: U.S. Department of Transportation, Federal Highway Administration, Highway Statistics 2001 (Washington DC: 2002), "Highway Expenditures by Government Type, Current and Constant Dollars" chart, also available at http://www.fhwa.dot.gov/ohim, as of June 2003.