Year US Dollars adjusted for inflation) 1974 8000000 1975 12000000 1979 20000000 1980 29000000 1981 5000000 1982 148000000 1983 250000000 1984 88000000 1985 57000000 1986 65000000 1987 212000000 1988 189000000 1989 66000000 1990 4000000 1991 113000000 1992 131000000 1993 137000000 1994 24000000 1995 41000000 1996 47000000 1997 47000000 1998 81000000 1999 55000000 2000 58000000 2001 73000000 2002 162000000 2003 134000000 2004 47000000 2005 20000000 2006 20000000 2007 20000000 2008 20000000 2009 26000000 2010 5000000 2014 1000000