Figure 4-1 Percent of GDP by Spending Category: 1991–2014
1 Other includes all other categories (e.g. entertainment, personal care products and services, and payments to pension plans).
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, table 3-9, calculated
based on data from U.S. Department of Commerce, Bureau of Economic Analysis, National Income and Product Account Tables, 1.1.5,
2.4.5, 3.11.5, 3.15.5, 4.2.5, 5.4.5, 5.5.5, and 5.7.5B, available at https://www.bts.gov/archive/publications/state_transporation_by_the_numbers
transportation_statistics/index.html as of February 2016.