Year	US Dollars
1960	57299999.23706
1961	63860000.61035
1962	50240001.67847
1963	51970001.2207
1964	61959999.08447
1965	60610000.61035
1966	79370002.74658
1967	69190002.44141
1968	66330001.83105
1969	90300003.05176
1970	119669998.16894
1971	77440002.44141
1972	56209999.08447
1973	125980003.35693
1974	126230003.35693
1975	102569999.69482
1976	95839996.33789
1977	79949996.94824
1978	90169998.16895
1979	214750000
1980	453130004.88281
1981	245589996.33789
1982	253009994.50684
1983	251899993.89648
1984	292380004.88281
1985	283429992.67578
1986	315089996.33789
1987	263250000
1988	374140014.64844
1989	407679992.67578
1990	517280029.29688
1991	1240170043.94531
1992	857909973.14453
1993	457510009.76562
1994	763599975.58594
1995	691590026.85547
1996	1078579956.05469
1997	490649993.89648
1998	722849975.58594
1999	841789978.02734
2000	732869995.11719
2001	1333510009.76563
2002	613929992.67578
2003	948840026.85547
2004	1279520019.53125
2005	753599975.58594
2006	692070007.32422
2007	738900024.41406
2008	639900024.41406
2009	654989990.23438
2010	500190002.44141
2011	485920013.42773
2012	508239990.23438
2013	461470001.2207
2014	407739990.23438
2015	488929992.67578
2016	461079986.57227
2017	587109985.35156
2018	352940002.44141
2019	397489990.23438
2020	460209991.45508
2021	713349975.58594