Year	US Dollars
1973	419999.98689
1974	34880001.06812
1975	37000000
1976	30030000.68665
1977	14739999.77112
1978	11329999.92371
1979	5949999.80927
1980	20610000.61035
1981	28639999.38965
1982	20540000.91553
1983	17260000.22888
1984	14140000.34332
1985	17729999.54224
1986	24620000.83923
1987	20180000.30518
1988	29930000.30518
1989	30159999.84741
1990	18430000.30518
1991	33490001.67847
1992	36990001.67847
1993	35029998.7793
1994	44529998.7793
1995	61619998.93188
1996	48240001.67847
1997	34439998.62671
1998	8659999.84741
1999	32520000.45776
2000	12619999.88556
2001	26799999.23706
2002	46220001.2207
2003	19120000.83923
2004	-21010000.22888
2005	11939999.58038
2006	20659999.84741
2007	19549999.23706
2008	15489999.77112
2009	37650001.52588
2010	40299999.23706
2011	32259998.32153
2012	26000000
2013	24020000.45776
2014	18469999.31335
2015	15010000.22888
2016	16360000.61035
2017	16280000.68665
2018	8649999.61853
2019	33020000.45776
2020	98150001.52588
2021	94949996.94824