Year	current US$
1964	11100000.3814697
1965	12100000.3814697
1966	12300000.1907349
1967	10100000.3814697
1968	11300000.1907349
1969	12199999.8092651
1970	12699999.8092651
1971	19500000
1972	22239999.7711182
1973	20190000.5340576
1974	25440000.5340576
1975	21799999.237060502
1976	33689998.626709
1977	31500000
1978	48540000.9155273
1979	28860000.6103516
1980	9750000
1981	27799999.237060502
1982	23430000.3051758
1983	25930000.3051758
1984	35259998.3215332
1985	32900001.5258789
1986	48729999.5422363
1987	73919998.1689453
1988	74870002.746582
1989	78129997.253418
1990	125000000
1991	83900001.5258789
1992	90260002.1362305
1993	88730003.3569336
1994	65500000
1995	72089996.3378906
1996	73489997.8637695
1997	48180000.3051758
1998	42189998.626709
1999	34849998.4741211
2000	24659999.8474121
2001	39520000.4577637
2002	34819999.6948242
2003	57310001.373291
2004	46330001.8310547
2005	41069999.6948242
2006	42139999.3896484
2007	47849998.4741211
2008	39479999.5422363
2009	41029998.779296905
2010	40650001.5258789
2011	35540000.9155273
2012	36369998.9318848
2013	36689998.626709
2014	28219999.3133545
2015	77610000.6103516
2016	31639999.3896484
2017	92709999.0844727
2018	100330001.831055
2019	101830001.831055
2020	74610000.6103516
2021	84900001.5258789
2022	98489997.8637695