Year	current US$
1970	48740.1498534645
1971	0
1972	0
1973	46051.8840596422
1974	765329.812752285
1975	141965.65180617
1976	362821.328811884
1977	1171890.96538147
1978	1437787.89298629
1979	1903207.56595725
1980	2008432.51676957
1981	1275567.97007726
1982	990598.033648543
1983	1135548.86650248
1984	985243.025045567
1985	802224.746170526
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	11928681.5456294
2004	12647137.4915068
2005	53066820.3744913
2006	195868251.824037
2007	208223407.042184
2008	238269499.790206
2009	209868504.797646
2010	394984324.007575
2011	488061741.384764
2012	455488464.387256
2013	463586196.786434
2014	250104219.274336
2015	214430685.505349
2016	155367622.964821
2017	214766413.887802
2018	207945208.337461
2019	166833569.847258
2020	106519064.643441
2021	328085317.1944