Year	current US$
1987	600000.023841858
1988	15109999.716281895
1989	53489998.331293456
1990	66140000.79408288
1991	37620000.31769273
1992	52209999.343380414
1993	35469999.43070108
1994	23750000.251457144
1995	97989999.43956727
1996	164209999.1571156
1997	36289999.58373603
1998	83080001.61312516
1999	56529999.118298315
2000	74730000.34131107
2001	56489999.467507064
2002	98229998.65002936
2003	128160001.24439608
2004	167439999.1258979
2005	474969998.08400875
2006	533709992.4758077
2007	431359999.33630234
2008	815259999.2882463
2009	854340000.5958971
2010	880810012.044385
2011	500969996.71868974
2012	194500000.5848705
2013	140439998.71239054
2014	124390001.79432337
2015	83269999.94181097
2016	155459998.77713627
2017	257709998.06188044
2018	269520002.8568507
2019	255449998.1757253
2020	208029999.2412329
2021	143129999.65809307
2022	299920003.00623477