"Table 8 
Investment in Rolling Stock as Percentage of GDP by Sector and by Mode, Average for 1977 – 2000
",,,,,,,,,,,,
,"Highway/
Transit",Air,Water,Railroad,,,,,,,,
Government,0.092,NA,NA,NA,,,,,,,,
Transportation industries,0.162,0.134,0.029,0.056,,,,,,,,
Non-transportation industries,0.915,0.092,0.025,0.025,,,,,,,,
Households,3.570,0.014,0.122,NA,,,,,,,,
Total,4.738,0.241,0.177,0.081,,,,,,,,
Key: NA = Data not available,,,,,,,,,,,,
"Notes:
Transportation industries cover establishments involved in providing railroad transportation, local and interurban passenger transit services, trucking and warehousing, water transportation, air transportation, pipelines except natural gas, and transportation services.
Non-transportation industries include agriculture, mining and construction, manufacturing, communications, utilities, trade, finance, insurance and real estate, and services industries.",,,,,,,,,,,,
"Sources: 
BTS calculations based on data from U.S. Department of Commerce, Bureau of Economic Analysis (BEA), ""Fixed Assets and Consumer Durables,"" ""National Income and Product Account (NIPA) Tables,"" available at http://www.bea.gov, as of July 2002.",,,,,,,,,,,,