Year	current US$
1971	1470000.02861023
1972	5059999.94277954
1973	1639999.98569489
1974	2119999.8855590797
1976	140000.000596046
1978	59999.9986588955
1979	230000.004172325
1983	180000.00715255702
1985	910000.026226044
1986	2200000.04768372
1987	1059999.9427795399
1988	3390000.10490417
1989	3970000.02861023
1990	5199999.80926514
1991	5389999.8664856
1992	7150000.09536743
1993	13779999.7329712
1994	12079999.923706101
1995	14050000.1907349
1996	25299999.237060502
1997	13260000.2288818
1998	10479999.5422363
1999	17649999.6185303
2000	14600000.3814697
2001	15689999.5803833
2002	17399999.6185303
2003	31399999.6185303
2004	42659999.8474121
2005	54919998.1689453
2006	69800003.0517578
2007	73769996.6430664
2008	57040000.9155273
2009	45869998.9318848
2010	53659999.8474121
2011	46020000.4577637
2012	39549999.237060495
2013	35630001.0681152
2014	46009998.3215332
2015	39060001.373291
2016	90989997.8637695
2017	72220001.2207031
2018	84269996.6430664
2019	67510002.1362305
2020	110900001.52587901
2021	77099998.4741211
2022	68230003.3569336