Year	US Dollars
1960	189999.99762
1961	11369999.88556
1962	29920000.07629
1963	34409999.84741
1964	139910003.66211
1965	135460006.71387
1966	111330001.83106
1967	119610000.61035
1968	96459999.08447
1969	91129997.25342
1970	101620002.74658
1971	182460006.71387
1972	110629997.25342
1973	128029998.7793
1974	142929992.67578
1975	199630004.88281
1976	187830001.83105
1977	163949996.94824
1978	177050003.05176
1979	215479995.72754
1980	203789993.28613
1981	202369995.11719
1982	204660003.66211
1983	224050003.05176
1984	208350006.10352
1985	257890014.64844
1986	287230010.98633
1987	240589996.33789
1988	269200012.20703
1989	464769989.01367
1990	403700012.20703
1991	390600006.10352
1992	382570007.32422
1993	405820007.32422
1994	348339996.33789
1995	343299987.79297
1996	355100006.10352
1997	310350006.10352
1998	283070007.32422
1999	299950012.20703
2000	386420013.42773
2001	444160003.66211
2002	336459991.45508
2003	389250000
2004	459459991.45508
2005	401179992.67578
2006	446600006.10352
2007	484529998.7793
2008	609739990.23438
2009	668809997.55859
2010	697400024.41406
2011	665510009.76562
2012	498700012.20703
2013	633210021.97266
2014	575219970.70312
2015	471489990.23438
2016	540150024.41406
2017	717900024.41406
2018	579890014.64844
2019	609840026.85547
2020	1049180053.71094
2021	799690002.44141