Year US Dollars 1960 539960021.97266 1961 179970001.2207 1962 241270004.27246 1963 200880004.88281 1964 568809997.55859 1965 732640014.64844 1966 394510009.76562 1967 722890014.64844 1968 465459991.45508 1969 586039978.02734 1970 299920013.42773 1971 433149993.89648 1972 911820007.32422 1973 1024560058.59375 1974 639159973.14453 1975 683210021.97266 1976 667049987.79297 1977 598020019.53125 1978 697950012.20703 1979 686080017.08984 1980 691890014.64844 1981 859260009.76562 1982 804080017.08984 1983 979570007.32422 1984 876169982.91016 1985 1046869995.11719 1986 1619500000 1987 1134010009.76563 1988 1084810058.59375 1989 1170189941.40625 1990 1646000000 1991 1317869995.11719 1992 2014469970.70313 1993 1698989990.23438 1994 1135780029.29688 1995 947450012.20703 1996 975340026.85547 1997 777309997.55859 1998 778599975.58594 1999 783390014.64844 2000 688979980.46875 2001 736409973.14453 2002 722010009.76562 2003 824960021.97266 2004 530020019.53125 2005 655960021.97266 2006 672390014.64844 2007 672559997.55859 2008 74309997.55859 2009 374869995.11719 2010 589539978.02734 2011 -38349998.47412 2012 56279998.7793 2013 161869995.11719 2014 640000000 2015 552469970.70312 2016 307799987.79297 2017 158210006.71387 2018 548450012.20703 2019 906869995.11719 2020 1456239990.23438 2021 1608579956.05469