Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	62633.7745499495
1975	9076.54819325802
1976	0
1977	0
1978	0
1979	146607.141230851
1980	702581.853917103
1981	584825.987882266
1982	382293.907677784
1983	659452.185715381
1984	741174.477793738
1985	754064.971643366
1986	936648.630896482
1987	1033276.70289633
1988	1009796.08689597
1989	337528.865061424
1990	358721.685828844
1991	1656617.0898237
1992	906857.813361903
1993	1308160.41446847
1994	8398560.93954735
1995	4742072.30346498
1996	6795295.70081656
1997	5135452.4260883
1998	3499906.25226157
1999	4491003.30052444
2000	7798471.00992679
2001	7280725.62863347
2002	13388552.2916199
2003	4904777.39491241
2004	3009338.00744446
2005	6128877.77964398
2006	15717883.3077354
2007	19268475.6855012
2008	19350460.3427752
2009	27061298.2117826
2010	61820986.9035767
2011	171651044.514367
2012	182411219.570914
2013	125739168.303373
2014	97807047.0852123
2015	55594496.6746726
2016	67824859.602423
2017	70295233.6693378
2018	24296820.3248778
2019	21355766.7350089
2020	67235879.7912247
2021	228176354.068071