Year	current US$
1975	11571865.230937801
1976	9709124.089139089
1977	13920564.81264367
1978	19498718.0720152
1979	29146070.309388697
1980	39047791.367256
1981	31464889.0283191
1982	29214294.9841974
1983	27554279.3305289
1984	27004966.221810296
1985	45496739.5412049
1986	53132215.79863901
1987	65216690.586275205
1988	57478940.3403549
1989	65327453.9673544
1990	70666501.3296648
1991	56857877.27683789
1992	63470043.092988595
1993	61872582.284478396
1994	50684009.3756172
1995	68176114.02570722
1996	61268402.113354005
1997	61152771.912775405
1998	59520119.294077
1999	73640881.5266126
2000	92432079.22614011
2001	140506996.33134452
2002	150374817.7425662
2003	208340293.5540339
2004	227114284.701883
2005	253613805.8162189
2006	291716165.39785737
2007	360171031.3029554
2008	445022380.18269545
2009	337746589.9298659
2010	355986343.1088741
2011	379184129.6669892
2012	311484469.043077
2013	372373800.50125974
2014	405319957.5802517
2015	405323272.2182173
2016	427617210.4326932
2017	442404432.8811012
2018	486670039.77221406
2019	671593520.429126
2020	311251834.8187064
2021	416235368.739918
2022	384353525.3235883