Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	709999.978542328
1989	1869999.95261431
1990	329999.99634921603
1991	24620000.8913875
1992	1110000.0031292401
1993	2540000.02145767
1994	739999.979734421
1995	8069999.35396016
1996	14830000.007525101
1997	9109999.90813434
1998	31090000.5325675
1999	95419999.3554503
2000	82279997.639358
2001	84300001.2319535
2002	141109996.29274
2003	140999999.657273
2004	117929997.671396
2005	47990000.825375296
2006	147379996.67041
2007	121699998.406693
2008	186119999.933988
2009	210419997.60270098
2010	98109998.2745945
2011	39290001.662448
2012	-5820000.084117049
2013	-13369999.9209493
2014	-15049999.9430031
2015	-31189999.941736497
2016	25589999.8117238
2017	56449997.4828213
2018	26169999.9663979
2019	21009999.9327213
2020	-1130000.44971704
2021	-26989999.5736778
2022	80230003.07194895