Year	US Dollars
1960	44259998.32153
1961	84540000.91553
1962	114809997.55859
1963	160899993.89648
1964	301390014.64844
1965	293519989.01367
1966	254460006.71387
1967	239289993.28613
1968	358359985.35156
1969	211910003.66211
1970	260170013.42773
1971	204080001.83105
1972	215729995.72754
1973	159759994.50684
1974	195539993.28613
1975	247710006.71387
1976	243270004.27246
1977	280000000
1978	299790008.54492
1979	370000000
1980	330869995.11719
1981	335079986.57227
1982	305059997.55859
1983	291799987.79297
1984	478850006.10352
1985	300570007.32422
1986	407140014.64844
1987	487649993.89648
1988	628479980.46875
1989	714119995.11719
1990	753330017.08984
1991	806880004.88281
1992	801450012.20703
1993	704489990.23438
1994	608580017.08984
1995	546030029.29688
1996	621390014.64844
1997	467190002.44141
1998	597640014.64844
1999	616500000
2000	642690002.44141
2001	625760009.76562
2002	549219970.70312
2003	650349975.58594
2004	576929992.67578
2005	634599975.58594
2006	768760009.76562
2007	759309997.55859
2008	880909973.14453
2009	778260009.76562
2010	1010270019.53125
2011	760460021.97266
2012	1131739990.23438
2013	1076170043.94531
2014	886750000
2015	1103270019.53125
2016	1324469970.70313
2017	1597510009.76563
2018	1289420043.94531
2019	1192260009.76563
2020	1453859985.35156
2021	1086390014.64844