Year	current US$
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	2500000
1969	8900000.005960459
1970	17999999.7615814
1971	29099999.904632602
1972	29190000.5340576
1973	37499999.7615814
1974	35649999.856948905
1975	66580000.4601479
1976	84939998.626709
1977	58700001.8954277
1978	56230001.211166404
1979	45629999.1607666
1980	58519999.999553
1981	91100000.4597008
1982	76759998.1725216
1983	48750000.7841736
1984	70509998.9958107
1985	93370001.1055917
1986	113889997.977763
1987	144050000.25033998
1988	153859999.37728
1989	168209998.289123
1990	146469999.79019198
1991	107389999.210835
1992	158610000.042245
1993	148620004.076511
1994	147590002.639219
1995	78399997.85833059
1996	50209999.2036819
1997	54170002.469793
1998	15279999.4722009
1999	-3739999.58485365
2000	32220000.199973598
2001	27860000.0888109
2002	-118579999.696463
2003	13879999.4830042
2004	10569999.743253
2005	28110000.1037121
2006	32239999.879151598
2007	29959999.397397
2008	16039999.9953806
2009	35430000.74476
2010	115440001.904964
2011	162290004.581213
2012	91790002.09271911
2013	190179998.546839
2014	193479999.868199
2015	87119997.4156916
2016	203629994.172603
2017	321979991.344735
2018	423450015.731156
2019	437169997.490942
2020	426470006.12691
2021	267979992.66535
2022	294900004.4055285