Year	current US$
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	410000.000149012
1988	860000.006854534
1989	1110000.01057982
1990	1499999.97764826
1991	12039999.9804795
1992	12900000.249967
1993	11479999.9613315
1994	17270000.243559502
1995	21960000.3678352
1996	63360001.1765957
1997	63060001.315549
1998	66059999.7490644
1999	53540000.1555681
2000	44320000.454783395
2001	90860001.6776472
2002	121819998.795167
2003	97909999.7542799
2004	117469999.698922
2005	106479999.32803199
2006	92579999.07247719
2007	162379998.687655
2008	184490000.005811
2009	191969995.64580598
2010	272290005.486459
2011	348360003.819689
2012	399140009.963885
2013	432430000.135675
2014	414419999.646023
2015	515320000.056177
2016	481860004.207119
2017	505879996.67786103
2018	507639994.956553
2019	494799996.383488
2020	600650007.296354
2021	575489998.027682
2022	631869998.7828732