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	0
1988	0
1989	0
1990	1000000
1991	4000000
1992	2230000.01907349
1993	2500000
1994	2339999.91416931
1995	0
1996	0
1997	3320000.17166138
1998	2900000.09536743
1999	3599999.90463257
2000	3969999.79019165
2001	4949999.80926514
2002	4809999.94277954
2003	13989999.7711182
2004	16379999.160766602
2005	20139999.3896484
2006	27680000.3051758
2007	37389999.3896484
2008	36069999.6948242
2009	25270000.4577637
2010	20770000.4577637
2011	19989999.7711182
2012	21210000.9918213
2013	29409999.8474121
2014	30930000.3051758
2015	31050001.144409202
2016	47680000.3051758
2017	54110000.6103516
2018	61119998.9318848
2019	51110000.6103516
2020	45700000.762939505
2021	57590000.1525879
2022	45730000.42326745