Year current US$ 1995 45000000 1996 68000000 1997 70000000 1998 74000000 1999 104000000 2000 99000000 2001 31000000 2002 40000000 2003 45000000 2004 61000000 2005 72000000 2007 99000000 2008 109000000 2009 116000000 2010 184000000 2011 115000000 2012 127000000 2013 126000000 2014 112000000 2015 114000000