Year US Dollars adjusted for inflation) 1962 3000000 1967 28000000 1970 23000000 1971 6000000 1972 106000000 1973 6000000 1974 129000000 1975 81000000 1980 0 1981 0 1982 0 1983 0 1984 1000000 1985 1000000 1986 1000000 1987 1000000 1988 1000000 1989 1000000 1990 0 1991 1000000 1992 1000000 1993 1000000 1994 0 1995 1000000 1996 2000000 1997 0 1998 0 1999 0 2000 0 2001 0 2002 3000000 2003 9000000 2004 1000000 2005 2000000 2006 75000000 2008 43000000 2009 45000000 2010 45000000 2011 83000000 2012 21000000 2013 12000000 2014 47000000 2015 15000000 2016 5000000 2017 20000000 2021 0 2022 123000000