Year	current US$
1980	8338939.46503701
1981	12207395.9172283
1982	10324676.8288889
1983	10841861.4131107
1984	13923522.6308469
1985	15683864.5418208
1986	19356888.0177778
1987	20292253.9497778
1988	22576473.5238519
1989	27024866.338
1990	27635264.4892963
1991	28104681.4444444
1992	31812533.037037
1993	35885786.9632889
1994	40522913.6666667
1995	48480948.3385312
1996	50514793.7331772
1997	51505189.7025134
1998	61557467.1111111
1999	50523593.2925926
2000	51041814.2222222
2001	45882718.214815
2002	44082134.5718522
2003	44786807.5088887
2004	44496362.8148148
2005	53258586.0444445
2006	53044222.0962962
2007	56304192.5333331
2008	61600165.7333332
2009	58933331.8648148
2010	60492563.6740741
2011	65555600.2370371
2012	62540597.388889
2013	77282619.6296297
2014	69646447.3466019
2015	61724626.3783486
2016	62813569.1706008
2017	64636559.2210094
2018	64391192.1200798
2019	64957979.3449798
2020	49090253.5206902
2021	53730904.813555