Year	current US$
1970	4661439.91779779
1971	7343273.08198718
1972	4057419.87947679
1973	5876618.19820154
1974	9224489.68126098
1975	22353414.4579151
1976	18115593.8177569
1977	19040761.4495329
1978	30818012.7964319
1979	33044720.781428
1980	34588303.3105838
1981	44279496.712607
1982	48284333.5926636
1983	27872670.8007269
1984	39997143.2729649
1985	58179927.9228769
1986	20550346.9691659
1987	16308964.5431145
1988	43107832.9342843
1989	41944562.6532791
1990	42460308.7795922
1991	38274331.748337
1992	39694632.1723819
1993	41022736.4092475
1994	40344621.24788
1995	48997115.6378193
1996	50967832.9309295
1997	47140980.448861
1998	46085081.6206902
1999	35931214.1790851
2000	36303608.251648
2001	36799983.8582429
2002	45536629.6900154
2003	44119121.4518216
2004	37475455.3514574
2005	40841602.5500514
2006	41157499.3619714
2007	56561917.7166036
2008	65338382.2097196
2009	68088930.3659264
2010	73562007.552111
2011	84809548.1161619
2012	86675021.4911178
2013	86782839.4486366
2014	91828687.6000587
2015	107201023.729034
2016	142165263.422772
2017	146280288.275889
2018	120765265.291601
2019	124001866.895142
2020	108847849.91062
2021	112570356.228353