Year	current US$
1970	1510827.3685315
1971	1778044.50761876
1972	1694582.03413083
1973	1598262.6894118
1974	3177159.0042814
1975	7328938.9180851
1976	8335343.83154503
1977	8221557.40882737
1978	7270170.56132501
1979	6919495.35442414
1980	7896941.94931642
1981	9730140.29544308
1982	10638151.2338348
1983	7490271.31561536
1984	6267960.79412448
1985	5907149.38423813
1986	3883535.60517355
1987	1816660.86558838
1988	432237.242588148
1989	122599.997227655
1990	381552.22146452
1991	218473.849476135
1992	50673.3852438409
1993	45766.7039373826
1994	11103.9064419709
1995	4819.54780767432
1996	38387.8300428452
1997	3087.76333986498
1998	0
1999	1060.42816548078
2000	41659.1086235687
2001	0
2002	0
2003	0
2004	0
2005	176819.005279716
2006	4997168.15802556
2007	0
2008	0
2009	0
2010	101748776.323677
2011	185451364.767017
2012	173051779.538985
2013	163119072.962856
2014	203254662.877168
2015	57285895.7451705
2016	42890675.3539282
2017	80538057.1467966
2018	124676783.440286
2019	113328595.513026
2020	59843178.833632
2021	143126835.315326