Year	current USD
1975	7330399.9290757
1976	8181627.955639261
1977	11010257.245197
1978	14774701.315276299
1979	17482911.9696129
1980	17039000.3786445
1981	13984418.4137989
1982	12781263.8844087
1983	12354815.176373601
1984	10632625.1782212
1985	10877815.4444056
1986	14412109.5216369
1987	13662211.308424601
1994	17471024.2162805
1995	18431407.117728602
1996	17398035.7813086
1997	17304328.3093671
1998	22035691.039271
1999	23550468.6543262
2000	20084946.6835961
2001	24828146.9335192
2002	20660327.0070647
2003	24604267.0337233
2004	31611724.7319155
2005	32798198.1845344
2008	53630486.4840723
2009	53000300.72895
2010	66889841.4422636
2011	83947561.3839522
2012	148865779.870604
2013	106064286.29260801
2014	145600369.85706902
2016	166192292.328363
2017	200183929.97036698
2018	229639906.143836
2019	247632082.845528
2020	238269588.33648998
2021	202404477.202902
2022	242507046.323759