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 300738.684791234 2005 1945009.05807688 2006 4079320.94532698 2007 0 2008 0 2009 0 2010 66835366.4207365 2011 76046071.3365274 2012 95828636.4944569 2013 111440878.160549 2014 116261164.716529 2015 59414863.9458111 2016 9352612.94676472 2017 40976848.5405296 2018 77832905.2690804 2019 82623617.9128183 2020 43602944.4617543 2021 104069759.508442