Year	current US$
1970	10910000.015050167
1971	15530000.045895569
1972	28430000.13381243
1973	37980000.056326374
1974	50279999.898746625
1975	61400000.408291794
1976	100609999.92489819
1977	165289999.615401
1978	198139999.0543724
1979	266719995.1708316
1980	367649999.73028916
1981	311079998.71857464
1982	296820004.83386225
1983	253779998.25961876
1984	286480000.1587718
1985	241609997.7474659
1986	434410004.5263768
1987	501159996.3791668
1988	542209996.4544177
1989	467369998.4680861
1990	617780001.5639514
1991	408720000.848174
1992	576879996.979609
1993	506869998.1197716
1994	508800002.6978553
1995	685699996.1212279
1996	679619999.0399183
1997	569419995.4960496
1998	629959997.3242729
1999	421999999.1115185
2000	553509999.9178202
2001	806759997.7925422
2002	898099994.5309018
2003	936990000.4956875
2004	1090690002.286807
2005	1262840019.7327137
2006	1190129993.923009
2007	1519649985.1569529
2008	1309210005.4882472
2009	1076780006.0734153
2010	1247459998.4325464
2011	778919997.1612543
2012	582349990.6715006
2013	574309998.5700101
2014	506159995.034337
2015	381010010.2983414
2016	438309999.4510411
2017	462440000.90472406
2018	503480006.44706213
2019	511139997.29789793
2020	508160003.5913288
2021	485420009.02071595
2022	465980003.1539053