Year	US Dollars
1966	46509998.32153
1967	68169998.16895
1968	65440002.44141
1969	69580001.83105
1970	79069999.69482
1971	66790000.91553
1972	71819999.69482
1973	85569999.69482
1974	123680000.30518
1975	114489997.86377
1976	94029998.7793
1977	148919998.16895
1978	295730010.98633
1979	55090000.15259
1980	164479995.72754
1981	156160003.66211
1982	148039993.28613
1983	169110000.61035
1984	272359985.35156
1985	216399993.89648
1986	239630004.88281
1987	186229995.72754
1988	155750000
1989	128690002.44141
1990	306630004.88281
1991	151619995.11719
1992	149169998.16895
1993	194929992.67578
1994	170050003.05176
1995	117800003.05176
1996	115129997.25342
1997	114029998.7793
1998	107949996.94824
1999	102879997.25342
2000	102790000.91553
2001	92699996.94824
2002	107959999.08447
2003	99300003.05176
2004	73819999.69482
2005	83800003.05176
2006	126300003.05176
2007	113330001.83106
2008	134130004.88281
2009	158770004.27246
2010	125720001.2207
2011	131380004.88281
2012	140509994.50684
2013	140270004.27246
2014	158259994.50684
2015	186479995.72754
2016	198529998.7793
2017	149770004.27246
2018	179059997.55859
2019	269769989.01367
2020	259059997.55859
2021	166990005.49316