Year	current US$
1960	34205217.56684578
1961	36949379.73454373
1962	39979670.949787244
1963	42814562.5462227
1964	46756471.51168545
1965	51442483.534217276
1966	56974851.56551829
1967	62269018.89686912
1968	70362818.30632721
1969	82514340.78353111
1970	100670003.6571033
1971	130921026.7754378
1972	164453151.2833386
1973	244407546.88711077
1974	309423718.5364626
1975	355168571.5367514
1976	372025093.0062732
1977	451624780.27459735
1978	590407374.4471157
1979	819870258.7830534
1980	1014056418.6689825
1981	1111339511.2926626
1982	1043693021.2953584
1983	1132574120.770225
1984	1126756332.7333517
1985	1018334702.5360999
1986	1282073114.1413324
1987	1729125681.0096364
1988	2468024508.527891
1989	2817256162.3833804
1990	3684802624.7187533
1991	4005749034.036636
1992	4258848902.1080947
1993	4453761315.683584
1994	4034905844.161891
1995	4698170013.999677
1996	4594673781.36735
1997	4875448036.47895
1998	4910053669.294916
1999	5222002272.729731
2000	5436161217.609471
2001	5352478942.683011
2002	4740674156.166954
2003	6795865108.386028
2004	7997879093.950436
2005	9084360896.671682
2006	9364081179.356121
2007	10200889864.468626
2008	10196319741.819736
2009	10029057941.827011
2010	12147261071.960846
2011	15016050301.298595
2012	14164563194.283115
2013	13621161024.742739
2014	14998439776.013659
2015	13076842710.508608
2016	13792127267.580196
2017	14738582295.465622
2018	15447818705.438004
2019	15849851164.950254
2020	14973976719.416368
2021	18570736136.924026
2022	19736738932.32072
2023	19153360989.61376