Year	current US$
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	69999.9984353781
1967	179999.99783933198
1968	679999.997839332
1969	1879999.97474253
1970	4020000.0442564497
1971	7050000.14044344
1972	7399999.99850988
1973	17999999.9646097
1974	19710000.2486259
1975	20530000.1185387
1976	21939999.7945875
1977	19789999.542757902
1978	10599999.8301268
1979	35140000.7307529
1980	59569999.7451156
1981	29660000.7154047
1982	33549999.073147804
1983	24520000.424236096
1984	17679999.9158829
1985	18170000.0520796
1986	20920000.3463775
1987	38299999.9132007
1988	27940000.0087917
1989	18259999.640286002
1990	14230000.2109259
1991	51530001.5266985
1992	45239999.5028973
1993	51829999.759793304
1994	50380001.6213208
1995	34440000.2490729
1996	50360000.556334905
1997	22460000.379010998
1998	32889999.728649896
1999	23950000.4071742
2000	60920000.6946921
2001	29990000.1008064
2002	26660000.7023662
2003	26709999.5650351
2004	27750000.1359731
2005	39489999.9815971
2006	52920000.4637241
2007	31209999.6302277
2008	45779999.8857081
2009	38409999.2327392
2010	24539999.488741197
2011	31109999.5225668
2012	32930000.4839897
2013	37890000.132843904
2014	37729999.9985844
2015	17680000.1040101
2016	15139999.8981506
2017	15340000.1749396
2018	47509999.0796298
2019	31400000.369176302
2020	21089999.586343803
2021	23119999.5242059
2022	12890000.017359843