Year US Dollars 1960 1568579956.05469 1961 802210021.97266 1962 1262439941.40625 1963 1427560058.59375 1964 1607050048.82813 1965 847640014.64844 1966 641440002.44141 1967 234070007.32422 1968 226119995.11719 1969 62139999.38965 1970 1125709960.9375 1971 826450012.20703 1972 751760009.76562 1973 4154870117.1875 1974 5788049804.6875 1975 9335219726.5625 1976 8724519531.25 1977 8764940429.6875 1978 7897950195.3125 1979 4196470214.84375 1980 3503300048.82813 1981 3190540039.0625 1982 3514189941.40625 1983 3421459960.9375 1984 4137069824.21875 1985 3993320068.35938 1986 3397159912.10938 1987 3284100097.65625 1988 2653320068.35938 1989 2922550048.82813 1990 9754799804.6875 1991 8510219726.5625 1992 5574810058.59375 1993 3636620117.1875 1994 3888560058.59375 1995 2618459960.9375 1996 2908479980.46875 1997 2813139892.57813 1998 2842310058.59375 1999 2312139892.57813 2000 2048620117.1875 2001 1965140014.64844 2002 1887239990.23438 2003 1342880004.88281 2004 1844400024.41406 2005 1258239990.23438 2006 1030479980.46875 2007 1239910034.17969 2008 1718130004.88281 2009 992169982.91016 2010 599270019.53125 2011 380329986.57227 2012 1570780029.29688 2013 5094319824.21875 2014 3345830078.125 2015 2757389892.57813 2016 2753810058.59375 2017 139710006.71387 2018 2089989990.23438 2019 1760160034.17969 2020 1561359985.35156 2021 7804189941.40625