Year	current US$
1971	59999.9986588955
1972	109999.999403954
1973	119999.997317791
1974	439999.997615814
1975	500000
1976	709999.978542328
1977	1129999.99523163
1978	2730000.01907349
1979	6860000.1335144
1980	11550000.1907349
1981	9899999.61853027
1982	5659999.84741211
1983	5110000.1335144
1984	6400000.09536743
1985	4880000.11444092
1986	16100000.381469702
1987	51520000.4577637
1988	38130001.0681152
1989	21569999.6948242
1990	41950000.762939505
1991	17530000.6866455
1992	23680000.3051758
1993	24129999.1607666
1994	100250000
1995	47299999.237060495
1996	64000000
1997	35139999.3896484
1998	47409999.8474121
1999	34040000.9155273
2000	38529998.779296905
2001	18290000.915527303
2002	18809999.4659424
2003	31409999.8474121
2004	18959999.084472697
2005	19700000.762939498
2006	23379999.1607666
2007	40290000.9155273
2008	30790000.915527303
2009	35799999.237060495
2010	69459999.0844727
2011	28870000.8392334
2012	54939998.626709
2013	34419998.1689453
2014	42450000.762939505
2015	26629999.1607666
2016	20520000.4577637
2017	41099998.4741211
2018	20989999.7711182
2019	50840000.1525879
2020	28219999.3133545
2021	19670000.0762939
2022	27239999.7711182