Year	US Dollars
1960	79999.99821
1961	159999.99642
1962	529999.97139
1963	370000.00477
1964	430000.00715
1965	3940000.05722
1966	4659999.84741
1967	9560000.41962
1968	12109999.65668
1969	4920000.07629
1970	10489999.77112
1971	4920000.07629
1972	7519999.98093
1973	7380000.11444
1974	13590000.15259
1975	14909999.84741
1976	18959999.08447
1977	26149999.61853
1978	27799999.23706
1979	60340000.15259
1980	38569999.69482
1981	43060001.37329
1982	44759998.32153
1983	46229999.54224
1984	39860000.61035
1985	37529998.7793
1986	32400001.52588
1987	40650001.52588
1988	30670000.07629
1989	39049999.23706
1990	42750000
1991	27719999.31335
1992	35279998.7793
1993	41659999.84741
1994	41880001.06812
1995	39810001.37329
1996	37880001.06812
1997	36470001.2207
1998	32930000.30518
1999	30420000.07629
2000	26090000.15259
2001	32549999.23706
2002	30959999.08447
2003	31299999.23706
2004	26170000.07629
2005	38319999.69482
2006	27670000.07629
2007	35400001.52588
2008	26870000.83923
2009	39080001.83105
2010	61360000.61035
2011	74790000.91553
2012	66540000.91553
2013	72089996.33789
2014	74339996.33789
2015	72529998.7793
2016	86190002.44141
2017	89250000
2018	96900001.52588
2019	110220001.2207
2020	162889999.38965
2021	104819999.69482