Year	current US$
1970	16129999.736323949
1971	19889999.74355101
1972	56210000.47400598
1973	58100000.44479971
1974	70640001.25974427
1975	136890000.86858866
1976	131299999.99701971
1977	177899998.87347227
1978	189620000.48160547
1979	284640006.5720081
1980	271290003.29971296
1981	245369999.34539196
1982	240419994.5591389
1983	210759999.12619588
1984	175580002.31534243
1985	194189997.04532337
1986	328909998.93844146
1987	308359995.7972764
1988	431959998.9783013
1989	393510000.76904887
1990	521290005.4510689
1991	610040004.260838
1992	516950000.30472887
1993	423579999.55303967
1994	370190001.46538013
1995	351530004.25919896
1996	405500000.0353902
1997	361229999.17156994
1998	293700001.9475817
1999	289599998.16119665
2000	337310003.75747675
2001	325660000.27209526
2002	344659997.118637
2003	608670000.2476573
2004	586639995.3141806
2005	638570002.7402492
2006	728589996.6917926
2007	748500002.5611361
2008	902689999.1333486
2009	807730008.4382297
2010	828750008.8289379
2011	1203909997.4092107
2012	951779991.8763337
2013	1071169999.0332118
2014	984780000.898987
2015	846960000.1480435
2016	837520003.3579017
2017	1022829993.1082869
2018	1174600003.3579767
2019	1077709994.2080672
2020	1111579998.8396466
2021	1345589988.1254876
2022	1032399997.1561134