Year	US Dollars
1960	75849998.47412
1961	71860000.61035
1962	103269996.64307
1963	56590000.15259
1964	71529998.7793
1965	41529998.7793
1966	70190002.44141
1967	80580001.83105
1968	97279998.7793
1969	108629997.25342
1970	123870002.74658
1971	139300003.05176
1972	148929992.67578
1973	134320007.32422
1974	164270004.27246
1975	176720001.2207
1976	163460006.71387
1977	154589996.33789
1978	206729995.72754
1979	233240005.49316
1980	264690002.44141
1981	309250000
1982	326820007.32422
1983	365720001.2207
1984	377059997.55859
1985	381260009.76562
1986	411260009.76562
1987	352929992.67578
1988	341350006.10352
1989	358429992.67578
1990	402000000
1991	380209991.45508
1992	431140014.64844
1993	312399993.89648
1994	426420013.42773
1995	357570007.32422
1996	142850006.10352
1997	80040000.91553
1998	99839996.33789
1999	110580001.83106
2000	144960006.71387
2001	230820007.32422
2002	259529998.7793
2003	296970001.2207
2004	422920013.42773
2005	421700012.20703
2006	478079986.57227
2007	507130004.88281
2008	495230010.98633
2009	567330017.08984
2010	621940002.44141
2011	538289978.02734
2012	507839996.33789
2013	534409973.14453
2014	492209991.45508
2015	397000000
2016	801770019.53125
2017	459670013.42773
2018	454809997.55859
2019	569849975.58594
2020	481269989.01367
2021	557530029.29688