Year US Dollars 1960 141089996.33789 1961 172570007.32422 1962 188110000.61035 1963 174850006.10352 1964 112459999.08447 1965 143199996.94824 1966 165350006.10352 1967 177350006.10352 1968 277820007.32422 1969 231360000.61035 1970 256010009.76562 1971 259769989.01367 1972 244130004.88281 1973 309529998.7793 1974 508200012.20703 1975 489700012.20703 1976 511920013.42773 1977 366179992.67578 1978 400519989.01367 1979 485149993.89648 1980 488540008.54492 1981 614309997.55859 1982 509089996.33789 1983 874690002.44141 1984 991429992.67578 1985 1901109985.35156 1986 1372699951.17188 1987 1151800048.82813 1988 1678859985.35156 1989 1243819946.28906 1990 1510640014.64844 1991 1609579956.05469 1992 1617930053.71094 1993 1562949951.17188 1994 1495619995.11719 1995 1123630004.88281 1996 1049339965.82031 1997 808179992.67578 1998 943890014.64844 1999 913500000 2000 1033489990.23438 2001 1675380004.88281 2002 1930729980.46875 2003 2122540039.0625 2004 2185879882.8125 2005 2277469970.70313 2006 2263550048.82813 2007 2655169921.875 2008 3329120117.1875 2009 3939850097.65625 2010 3572209960.9375 2011 3399540039.0625 2012 3212090087.89063 2013 3791459960.9375 2014 3453010009.76563 2015 3410300048.82813 2016 4376410156.25 2017 4346399902.34375 2018 4987330078.125 2019 4798509765.625 2020 5304729980.46875 2021 3761830078.125