Year US Dollars adjusted for inflation) 1993 146000000 1994 29000000 1995 208000000 1996 29000000 2000 0 2002 27000000 2004 1000000 2005 4000000 2007 0 2008 0 2009 9000000 2010 9000000 2012 2000000 2013 5000000 2017 47000000 2018 34000000 2019 15000000 2020 25000000 2022 2000000