Year	US Dollars
1960	19549999.23706
1961	20500000
1962	22670000.07629
1963	28639999.38965
1964	27360000.61035
1965	36900001.52588
1966	43860000.61035
1967	48520000.45776
1968	59729999.54224
1969	64290000.91553
1970	64449996.94824
1971	50110000.61035
1972	81099998.47412
1973	70080001.83105
1974	65010002.13623
1975	100480003.35693
1976	92150001.52588
1977	70800003.05176
1978	91150001.52588
1979	67970001.2207
1980	95970001.2207
1981	64370002.74658
1982	64639999.38965
1983	66980003.35693
1984	49580001.83105
1985	52049999.23706
1986	66790000.91553
1987	103330001.83106
1988	86690002.44141
1989	74569999.69482
1990	65050003.05176
1991	54180000.30518
1992	65610000.61035
1993	71290000.91553
1994	63369998.93188
1995	58590000.15259
1996	52180000.30518
1997	53909999.84741
1998	44369998.93188
1999	59759998.32153
2000	120629997.25342
2001	115330001.83106
2002	53279998.7793
2003	112879997.25342
2004	169610000.61035
2005	247910003.66211
2006	247369995.11719
2007	258739990.23438
2008	233690002.44141
2009	227970001.2207
2010	301869995.11719
2011	256399993.89648
2012	242940002.44141
2013	243500000
2014	175050003.05176
2015	197979995.72754
2016	181130004.88281
2017	183580001.83105
2018	191910003.66211
2019	225979995.72754
2020	214259994.50684
2021	241710006.71387