Year	US Dollars
1960	108330001.83106
1961	383910003.66211
1962	435640014.64844
1963	280500000
1964	375149993.89648
1965	299089996.33789
1966	248169998.16895
1967	288029998.7793
1968	283709991.45508
1969	241550003.05176
1970	333130004.88281
1971	369339996.33789
1972	318049987.79297
1973	434630004.88281
1974	636520019.53125
1975	1037109985.35156
1976	901979980.46875
1977	1070839965.82031
1978	1171449951.17188
1979	1435400024.41406
1980	1526420043.94531
1981	1694709960.9375
1982	1705050048.82813
1983	1517689941.40625
1984	1497989990.23438
1985	1300660034.17969
1986	1412439941.40625
1987	1633670043.94531
1988	1665010009.76563
1989	1534089965.82031
1990	1712729980.46875
1991	1530660034.17969
1992	1826900024.41406
1993	1360739990.23438
1994	1321619995.11719
1995	1058500000
1996	1089630004.88281
1997	1304609985.35156
1998	1386469970.70313
1999	1393329956.05469
2000	1492410034.17969
2001	1846540039.0625
2002	1874609985.35156
2003	2165929931.64063
2004	2032310058.59375
2005	1665589965.82031
2006	2050909912.10938
2007	2881149902.34375
2008	2234989990.23438
2009	3149020019.53125
2010	2981090087.89063
2011	2334389892.57813
2012	2753300048.82813
2013	3335479980.46875
2014	2558949951.17188
2015	2724489990.23438
2016	2466100097.65625
2017	2711199951.17188
2018	2476810058.59375
2019	2177330078.125
2020	2276459960.9375
2021	2423850097.65625