Year	US Dollars
1960	1600000.02384
1961	2880000.11444
1962	4059999.94278
1963	4989999.77112
1964	6130000.11444
1965	5170000.07629
1966	18350000.38147
1967	16819999.69482
1968	21209999.08447
1969	27209999.08447
1970	25040000.91553
1971	32849998.47412
1972	39450000.76294
1973	44470001.2207
1974	76519996.64307
1975	52450000.76294
1976	119860000.61035
1977	59439998.62671
1978	64069999.69482
1979	97230003.35693
1980	94230003.35693
1981	73209999.08447
1982	63740001.67847
1983	68650001.52588
1984	66110000.61035
1985	59029998.7793
1986	54430000.30518
1987	96190002.44141
1988	66410003.66211
1989	63020000.45776
1990	72970001.2207
1991	68879997.25342
1992	59209999.08447
1993	54919998.16895
1994	55479999.54224
1995	56490001.67847
1996	43080001.83105
1997	40049999.23706
1998	48000000
1999	48650001.52588
2000	59729999.54224
2001	54150001.52588
2002	47740001.67847
2003	49509998.32153
2004	50250000
2005	49500000
2006	60020000.45776
2007	61439998.62671
2008	99190002.44141
2009	111349998.47412
2010	104760002.13623
2011	74940002.44141
2012	82190002.44141
2013	78430000.30518
2014	88730003.35693
2015	195699996.94824
2016	134130004.88281
2017	133860000.61035
2018	130009994.50684
2019	132729995.72754
2020	154020004.27246
2021	149759994.50684