Year	US Dollars
1960	1329489990.23438
1961	1220000000
1962	1268680053.71094
1963	1539459960.9375
1964	1633910034.17969
1965	2016000000
1966	3219560058.59375
1967	2794340087.89063
1968	2626879882.8125
1969	2577280029.29688
1970	2316260009.76563
1971	2366649902.34375
1972	2779669921.875
1973	2147620117.1875
1974	2920199951.17188
1975	1405839965.82031
1976	754599975.58594
1977	876559997.55859
1978	1148579956.05469
1979	915940002.44141
1980	570419982.91016
1981	619090026.85547
1982	599109985.35156
1983	369160003.66211
1984	381779998.7793
1985	377549987.79297
1986	375540008.54492
1987	216190002.44141
1988	254759994.50684
1989	196110000.61035
1990	248059997.55859
1991	307970001.2207
1992	675090026.85547
1993	373329986.57227
1994	1225359985.35156
1995	891650024.41406
1996	1127569946.28906
1997	1117140014.64844
1998	1390089965.82031
1999	1477439941.40625
2000	1746180053.71094
2001	1765420043.94531
2002	1468260009.76563
2003	1869510009.76563
2004	1834630004.88281
2005	1851680053.71094
2006	1849650024.41406
2007	2414540039.0625
2008	2235110107.42188
2009	3213419921.875
2010	2643989990.23438
2011	2954010009.76563
2012	3671909912.10938
2013	3918860107.42188
2014	4130580078.125
2015	3458500000
2016	3062100097.65625
2017	2527310058.59375
2018	1653209960.9375
2019	1115680053.71094
2020	1170770019.53125
2021	467489990.23438