Year US Dollars 1960 889999.98569 1961 12159999.84741 1966 11250000 1967 3890000.1049 1968 1379999.99523 1975 3109999.8951 1976 41950000.76294 1977 10189999.58038 1978 11409999.84741 1979 7300000.19073 1980 8979999.54224 1981 14810000.41962 1982 25190000.53406 1983 32049999.23706 1984 31719999.31335 1985 33159999.84741 1986 24110000.61035 1987 30760000.22888 1988 41049999.23706 1989 85250000 1990 88930000.30518 1991 78099998.47412 1992 80589996.33789 1993 66769996.64307 1994 69459999.08447 1995 113980003.35693 1996 62360000.61035 1997 49020000.45776 1998 41209999.08447 1999 41930000.30518 2000 56500000 2001 63500000 2002 40810001.37329 2003 48630001.06812 2004 39279998.7793 2005 37029998.7793 2006 25360000.61035 2007 51369998.93188 2008 44750000 2009 29040000.91553 2010 48790000.91553 2011 68330001.83105 2012 49310001.37329 2013 51270000.45776 2014 39389999.38965 2015 53869998.93188 2016 50919998.16895 2017 42610000.61035 2018 52569999.69482 2019 52409999.84741 2020 91980003.35693 2021 66449996.94824