Year current US$ 1970 0 1971 0 1972 0 1973 0 1974 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 0 1994 0 1995 0 1996 0 1997 0 1998 0 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0 2005 209492.546367043 2006 583034.722294149 2007 658487.197574795 2008 553545.245751502 2009 674791.86973107 2010 909229.156705908 2011 1569121.04615677 2012 0 2013 139390.554077226 2014 113853.391652559 2015 85872.5400250477 2016 110390.332607286 2017 0 2018 0 2019 0 2020 0 2021 0