Year	current US$
1970	181600000.0834465
1971	178299998.5814094
1972	253569999.5756149
1973	278139999.03202057
1974	387099999.4277954
1975	471100004.6133994
1976	462099996.2612985
1977	431499998.98672104
1978	543839998.4240531
1979	653600003.8571655
1980	911019998.036325
1981	925849993.7914315
1982	904309996.2174894
1983	824699999.6863304
1984	938059986.4572282
1985	884109998.7477067
1986	1220220000.632107
1987	1500560006.0373554
1988	1672199988.8289728
1989	1892899992.3020601
1990	2660569996.9232087
1991	2424910005.9829655
1992	2630819971.438498
1993	2619049996.405839
1994	2692339979.259298
1995	2305659960.9162655
1996	1906709989.9575121
1997	1786049999.3879344
1998	1239880008.563399
1999	1213400006.9182367
2000	1025160002.7419626
2001	755470003.6868454
2002	1783719988.9253826
2003	2569359995.741397
2004	2534019988.611341
2005	3467650011.39045
2006	3810740027.755496
2007	2174749988.1386747
2008	1862240013.8080122
2009	2537700064.837933
2010	2647150020.3907495
2011	3153350052.0735974
2012	2772170006.39625
2013	1941789982.434363
2014	1784649986.4831572
2015	1503990008.0319498
2016	1211300003.4131105
2017	1469830001.5628338
2018	1982360033.6462271
2019	2174299987.338484
2020	3080609995.7823744
2021	2555240027.8337293
2022	3179650041.7049975