Year US Dollars adjusted for inflation) 1991 1000000 1992 27000000 1993 27000000 1994 53000000 1995 1000000 1996 12000000 1997 41000000 2001 57000000 2002 2000000 2003 24000000 2004 8000000 2007 19000000 2008 99000000 2009 4000000 2010 11000000 2011 19000000 2012 19000000 2014 27000000 2015 11000000 2016 20000000 2017 13000000 2018 2000000 2019 5000000 2022 29000000