Year	current US$
1979	1520000.0107288333
1980	6179999.858140946
1981	11520000.316202637
1982	20470000.147819523
1983	15139999.903738504
1984	37110000.61780218
1985	44809999.32624403
1986	44899998.739361785
1987	61829999.12835653
1988	9429999.80598691
1989	10770000.174641605
1990	29250000.0149012
1991	15439999.84115359
1992	8089999.519288516
1993	16720000.160858063
1994	10870000.43317677
1995	14059999.55534933
1996	23920000.79900024
1997	37379999.50908126
1998	37260001.040995106
1999	51049999.39352274
2000	35710000.20578504
2001	41529999.34926626
2002	34169999.73915516
2003	37080000.05781652
2004	31539999.883621924
2005	45329999.5660782
2006	47309999.950230055
2007	58130000.50559637
2008	79530000.90271243
2009	57990000.04678961
2010	57850000.41127212
2011	83119999.58008528
2012	80740000.30010942
2013	63889999.82178205
2014	69109998.94887209
2015	79008580.96778387
2016	75131944.81562823
2017	62502566.10661742
2018	93440139.48738581
2019	59700366.6684031
2020	18404449.269175515
2021	-21314001.113176353
2022	-27742708.96613598