Year current US$ 1995 14000000 1996 14000000 1997 13000000 1998 13000000 1999 7000000 2000 4000000 2001 5000000 2002 5000000 2003 7000000 2004 9000000 2005 10000000 2006 11000000 2007 12000000 2008 13000000 2009 13000000 2010 12000000 2011 6000000 2012 500000 2013 10000000 2014 11000000 2015 56000000 2016 98000000 2017 112000000 2018 108000000 2019 102000000 2020 33200000.7629395