Year	current US$
1975	70151177.06125182
1976	99379379.98586288
1977	130615838.16204126
1978	176246518.88158625
1979	226722155.68862277
1980	377989054.7263682
1981	367456485.3556486
1982	367633785.4500616
1983	357114794.21579534
1984	366591226.32103693
1985	380254030.7101727
1986	464314802.259887
1987	569603166.8696712
1988	661573902.1329987
1989	670701893.4911243
1990	791513444.3021767
1991	819352020.2020202
1992	928703911.3428944
1993	841823321.5547704
1994	902100833.3333334
1995	947340232.8589909
1996	941948557.089084
1997	888063854.0478905
1998	915587104.0723982
1999	905978425.0269687
2000	813785108.3883129
2001	805405282.3315117
2002	883200000
2003	1067840317.1007928
2004	1248667500
2005	1253948513.8664346
2006	1230702546.731903
2007	1376475499.5893786
2008	1524606708.6568038
2009	1400944570.6463728
2010	1303667347.0770025
2011	1271663871.83372
2012	1049479626.6437626
2013	930784965.4260068
2014	947033740.6460985
2015	848159362.6170824
2016	961932012.106275
2017	1122180093.4200084
2018	1364285887.9189253
2019	1415137803.0620668
2020	1437609141.7639294
2021	1523765737.366485
2022	1531943567.2262626
2023	1691028444.4758642