Year	current US$
1960	0
1961	49999.998882412896
1962	0
1963	340000.001713634
1964	660000.002011657
1965	919999.990612268
1966	1309999.98375773
1967	1210000.01579523
1968	1219999.98576939
1969	1990000.01698732
1970	1580000.00193715
1971	2199999.98621643
1972	3619999.95075166
1973	5870000.00104308
1974	7039999.9544024505
1975	7360000.029206281
1976	8049999.9448657
1977	12600000.059232099
1978	26770000.1783669
1979	22599999.871104997
1980	26890000.1626462
1981	30839999.7968227
1982	41540000.2971292
1983	52550000.397488505
1984	51780000.301078
1985	50970000.0807643
1986	71180000.6143749
1987	90769999.4407594
1988	114890000.933781
1989	83719998.6726046
1990	139719999.784604
1991	144229999.77134198
1992	130279999.86149399
1993	123329998.604953
1994	127170000.933111
1995	144800000.216812
1996	127440001.606941
1997	97060000.3637373
1998	100059998.955578
1999	95939998.742193
2000	102160000.750795
2001	98460000.8819252
2002	113219998.870045
2003	169349999.62151098
2004	162149998.528883
2005	157900000.095367
2006	157590001.40242302
2007	196520000.692457
2008	183240000.516176
2009	353160002.142191
2010	236879999.961704
2011	353729997.113347
2012	295200001.850724
2013	336919997.63250405
2014	389689997.49422103
2015	418030003.543943
2016	367960005.756468
2017	368539998.57976997
2018	379900004.182011
2019	399589995.786548
2020	428580003.542826
2021	479230005.448684
2022	439839998.6214937