Year current US$ 1995 43000000 1996 44000000 1997 51000000 1998 44000000 1999 33000000 2000 33000000 2001 29000000 2002 29000000 2003 31000000 2004 32000000 2005 46000000 2006 47000000 2007 54000000 2008 56000000 2009 61000000 2010 67000000 2011 68000000 2012 69000000 2013 69800003.0517578