Year	US Dollars
1960	9630000.11444
1961	57450000.76294
1962	44220001.2207
1963	78500000
1964	83930000.30518
1965	94949996.94824
1966	132789993.28613
1967	90069999.69482
1968	64400001.52588
1969	72800003.05176
1970	77870002.74658
1971	57400001.52588
1972	81269996.64307
1973	57319999.69482
1974	40139999.38965
1975	64379997.25342
1976	62040000.91553
1977	85180000.30518
1978	92959999.08447
1979	95519996.64307
1980	212119995.11719
1981	288769989.01367
1982	435829986.57227
1983	563119995.11719
1984	520280029.29688
1985	708780029.29688
1986	681030029.29688
1987	829210021.97266
1988	748929992.67578
1989	700020019.53125
1990	561739990.23438
1991	444910003.66211
1992	570969970.70312
1993	533140014.64844
1994	404910003.66211
1995	361649993.89648
1996	344309997.55859
1997	360709991.45508
1998	260640014.64844
1999	268269989.01367
2000	263619995.11719
2001	378859985.35156
2002	365799987.79297
2003	274970001.2207
2004	296480010.98633
2005	252139999.38965
2006	196320007.32422
2007	129220001.2207
2008	233020004.27246
2009	291760009.76562
2010	318489990.23438
2011	311910003.66211
2012	239940002.44141
2013	167089996.33789
2014	96919998.16895
2015	97010002.13623
2016	139699996.94824
2017	158940002.44141
2018	256290008.54492
2019	308989990.23438
2020	342100006.10352
2021	203649993.89648