Year US Dollars adjusted for inflation) 1991 2000000 1992 10000000 1993 22000000 1994 11000000 1995 22000000 1996 20000000 1997 9000000 1998 4000000 1999 19000000 2000 2000000 2001 41000000 2002 2000000 2003 17000000 2004 17000000 2005 3000000 2006 3000000 2007 2000000 2009 10000000 2010 40000000 2011 28000000 2014 1000000 2021 9000000