Year	current US$
1970	6940085.08621557
1971	6922686.16865772
1972	14743918.3836932
1973	18820020.2196188
1974	20277205.8328146
1975	20659067.46036
1976	21085943.9820735
1977	25662481.4176408
1978	34679396.6191187
1979	40789820.9655987
1980	49211744.4214615
1981	61057717.1594187
1982	50593473.6175175
1983	45149219.1138922
1984	36040806.9315641
1985	35821728.7795593
1986	48331704.3383037
1987	55629149.1225835
1988	57249419.158102
1989	48744814.5998873
1990	84872045.4663254
1991	109201105.726588
1992	109158307.616632
1993	89197906.8913056
1994	56470444.0259601
1995	67314810.0464711
1996	63909189.7682428
1997	53911065.9075154
1998	63722317.3197452
1999	70477111.8836674
2000	67056583.9540107
2001	69430362.3118969
2002	75410835.4201995
2003	92701331.0032863
2004	105179408.724794
2005	124006505.783834
2006	135891441.38775
2007	183839345.723818
2008	181481448.681997
2009	276892757.054299
2010	281645332.143479
2011	353503658.814541
2012	364522211.933885
2013	442057977.197957
2014	586874119.169965
2015	382780232.321986
2016	291694018.538744
2017	281538297.48915
2018	439165741.521927
2019	441565294.134614
2020	430985933.947693
2021	497552574.226729