Year	current US$
1979	300000.000745058
1980	1689999.98271465
1981	4250000.10058284
1982	13010000.009089699
1983	13880000.077188
1984	35660000.3838539
1985	41779999.20398
1986	41909998.629242204
1987	57169999.7037649
1988	18759999.6328354
1989	18070000.0450015
1990	33530000.0607967
1991	18309999.7937679
1992	7989999.52338636
1993	13910000.065341601
1994	14810000.438243201
1995	6459999.71032143
1996	24950000.390410397
1997	33879999.423399605
1998	31540000.857785303
1999	23449999.3082136
2000	17220000.3210455
2001	43049999.335780695
2002	28159999.759867802
2003	21830000.0354648
2004	17629999.9579787
2005	33959999.546408705
2006	36489999.8046458
2007	61070000.5926192
2008	49200000.0178814
2009	36639999.7025728
2010	56160000.7414818
2011	94599998.6045063
2012	82230000.1420081
2013	62630000.978708304
2014	87679999.1354346
2015	99871689.029038
2016	88936660.7023403
2017	74144595.7571268
2018	72361111.6409302
2019	50273528.7547112
2020	56847460.5903029
2021	-2078001.20487809
2022	-358039.6547912978