Year	current US$
1974	18718548.4175995
1975	19188682.3130794
1976	17169646.9241552
1977	27344992.9595804
1978	18021337.9769553
1979	54979005.5572829
1980	5450000
1981	8336710.57251288
1982	6473031.07454914
1983	20396000
1984	3476406.287093
1985	1517968.3655536
1986	2660463.93404523
1987	509559.83203053
1988	380370.873760278
1989	7876424.92180724
1991	1307912.92966571
1992	977250.15468808
1993	2362459.63713964
1994	5069083.03175315
1995	28088832.6574782
1996	376466.932784226
1997	419970.618712491
1998	616574.620713446
1999	431082.305644592
2000	267707.367815772
2001	480275.980603404
2002	3298470.65155747
2003	7376738.87371289
2004	18742650.4077665
2005	25395460.7689592
2006	71989512.763969
2007	119359165.225347
2008	160860063.211478
2009	372457051.883517
2010	442033413.934885
2011	506827130.971263
2012	574181706.182313
2013	589723179.795313
2014	498992032.991349
2015	560742588.406987
2016	586024559.973528
2017	585997776.606725
2018	332150947.81251
2019	297070852.933413
2020	340965880.534905
2021	700828780.063079
2022	599660417.529906