Year	current US$
1980	5599999.90463257
1981	9069999.69482422
1982	2259999.99046326
1983	740000.009536743
1984	860000.014305115
1985	899999.976158142
1986	1429999.94754791
1987	1190000.0572204601
1988	1399999.97615814
1989	9369999.88555908
1990	32180000.305175804
1991	13569999.6948242
1992	43500000
1993	19739999.7711182
1994	15350000.3814697
1995	35840000.1525879
1996	27350000.3814697
1997	12180000.3051758
1998	24399999.6185303
1999	9590000.15258789
2000	5849999.90463257
2001	649999.976158142
2002	-2440000.05722046
2003	-5650000.09536743
2004	-6869999.88555908
2005	-8520000.45776367
2006	-9260000.22888184
2007	-4139999.8664856004
2008	-5590000.15258789
2009	-7289999.96185303
2010	189429992.67578098
2011	-10380000.1144409
2012	-10279999.7329712
2013	-8060000.419616699
2014	130679992.675781
2015	-13789999.961853001
2016	45610000.6103516
2017	-11590000.1525879
2018	106029998.77929701
2019	-11319999.6948242
2020	274679992.675781
2021	319769989.013672
2022	-20479999.5422363