Year	current US$
1964	180000.00715255702
1965	250000
1966	349999.99403953605
1967	579999.983310699
1968	699999.988079071
1969	699999.988079071
1970	980000.019073486
1971	1159999.9666214
1972	1830000.04291534
1973	360000.01430511504
1979	910000.026226044
1980	389999.98569488496
1981	1159999.9666214
1982	7000000
1983	1200000.04768372
1984	1059999.9427795399
1985	1149999.97615814
1986	2200000.04768372
1987	2650000.09536743
1988	3460000.03814697
1989	4539999.96185303
1990	7349999.90463257
1991	5199999.80926514
1992	9899999.61853027
1993	13300000.1907349
1994	19290000.915527303
1995	20479999.5422363
1996	21209999.084472697
1997	27809999.4659424
1998	31290000.915527303
1999	25450000.762939498
2000	21000000
2001	19729999.5422363
2002	32619998.931884803
2003	38369998.9318848
2004	41669998.1689453
2005	45529998.779296905
2006	50459999.0844727
2007	69769996.6430664
2008	74980003.3569336
2009	67319999.6948242
2010	71449996.9482422
2011	80970001.2207031
2012	52569999.6948242
2013	69970001.2207031
2014	65069999.694824204
2015	44599998.4741211
2016	43700000.762939505
2017	29870000.8392334
2018	35349998.4741211
2019	35540000.9155273
2020	33189998.626709
2021	32819999.694824196
2022	39759998.3215332