Year current US$ 1995 1000000 1996 1000000 1997 3000000 1998 2000000 1999 4000000 2001 4000000 2002 3000000 2003 3000000 2004 3000000 2005 4000000 2006 2000000 2007 1000000 2008 4000000 2009 3000000 2010 3000000 2011 7000000 2012 10000000 2013 17000000 2014 400000.00596046395 2015 1000000 2016 1000000 2017 7000000 2018 22000000 2019 39000000 2020 14000000