Year	US Dollars
1960	1450000.04768
1961	1179999.94755
1962	147679992.67578
1963	313709991.45508
1964	153289993.28613
1965	505390014.64844
1966	326200012.20703
1967	354399993.89648
1968	251289993.28613
1969	191960006.71387
1970	187759994.50684
1971	124190002.44141
1972	118970001.2207
1973	89360000.61035
1974	66900001.52588
1975	75709999.08447
1976	86150001.52588
1977	50209999.08447
1978	59569999.69482
1979	127980003.35693
1980	175199996.94824
1981	155279998.7793
1982	231899993.89648
1983	144929992.67578
1984	326859985.35156
1985	362000000
1986	142669998.16895
1987	209960006.71387
1988	186009994.50684
1989	225080001.83105
1990	139399993.89648
1991	112949996.94824
1992	104569999.69482
1993	-16139999.38965
1994	79680000.30518
1995	106529998.7793
1996	100550003.05176
1997	84470001.2207
1998	149860000.61035
1999	252149993.89648
2000	82120002.74658
2001	163940002.44141
2002	223529998.7793
2003	101959999.08447
2004	115199996.94824
2005	109680000.30518
2006	97120002.74658
2007	146729995.72754
2008	171550003.05176
2009	136330001.83105
2010	194399993.89648
2011	226649993.89648
2012	261899993.89648
2013	144240005.49316
2014	160270004.27246
2015	303369995.11719
2016	190789993.28613
2017	124110000.61035
2018	91050003.05176
2019	134000000
2020	374260009.76562
2021	427459991.45508