Year	US Dollars
1960	217520004.27246
1961	217149993.89648
1962	273489990.23438
1963	185600006.10352
1964	198869995.11719
1965	163880004.88281
1966	175839996.33789
1967	165229995.72754
1968	165380004.88281
1969	193630004.88281
1970	226889999.38965
1971	197240005.49316
1972	230619995.11719
1973	104470001.2207
1974	71699996.94824
1975	192210006.71387
1976	77199996.94824
1977	59130001.06812
1978	115160003.66211
1979	124400001.52588
1980	271609985.35156
1981	335420013.42773
1982	327790008.54492
1983	353859985.35156
1984	434440002.44141
1985	473339996.33789
1986	413420013.42773
1987	548780029.29688
1988	669130004.88281
1989	882020019.53125
1990	1004890014.64844
1991	965309997.55859
1992	1003440002.44141
1993	882780029.29688
1994	1038000000
1995	1053150024.41406
1996	868580017.08984
1997	1131020019.53125
1998	925590026.85547
1999	850239990.23438
2000	1275180053.71094
2001	1271400024.41406
2002	1069030029.29688
2003	1281430053.71094
2004	1434030029.29688
2005	1376619995.11719
2006	1742050048.82813
2007	1772599975.58594
2008	1612719970.70313
2009	1827219970.70313
2010	1721030029.29688
2011	1526430053.71094
2012	1624160034.17969
2013	1668020019.53125
2014	1596160034.17969
2015	1736130004.88281
2016	1881310058.59375
2017	2117600097.65625
2018	1968219970.70313
2019	2081370117.1875
2020	3085770019.53125
2021	2380310058.59375