Year	current US$
1970	240748.378611848
1971	174912.148317763
1972	315975.000363328
1973	1238388.29674073
1974	4601699.22354418
1975	477382.448287782
1976	1490323.97385124
1977	6579883.8550797
1978	5381370.76040546
1979	6755783.00459893
1980	14075575.0452974
1981	6572829.6976601
1982	4346504.05344679
1983	5129930.77593403
1984	4867294.80272775
1985	3448747.4110515
1986	89681.6631275727
1987	312225.65121277
1988	3203095.17115627
1989	6586559.53835065
1990	1939926.96472287
1991	205020.387304619
1992	44548.1855816049
1993	31781.4363666639
1994	70797.9806351587
1995	55324.4376948774
1996	140068.303626579
1997	105326.329594142
1998	45966.753381179
1999	25007.5493153873
2000	28759.4436167496
2001	21599.6572161929
2002	13903.6655443968
2003	101.681489886584
2004	35746.2117881352
2005	33112.9549903098
2006	82050.6788032714
2007	711967.980644474
2008	1595146.19576915
2009	2363930.65563201
2010	2975311.79529849
2011	4869988.57608502
2012	2444304.31524283
2013	680515.970865454
2014	0
2015	0
2016	1677.8683043874
2017	13167.031979401
2018	47667.7100279333
2019	857359.872516
2020	564330.953122044
2021	1395910.93860749