Year % of GDP 1993 2.522583158085519 1994 4.9940494070941535 1995 3.566058596232218 1996 5.772563665619587 1997 16.994760588584334 1998 40.52046627304473 1999 29.938538142163264 2000 46.865106536660676 2001 22.438452644512505 2002 16.736448196976436 2003 14.465867724861567 2004 19.598951317960463 2005 18.111699803722374 2006 31.63356161166522 2007 57.13263249022946 2008 28.816847223320053 2009 18.298148264874825 2010 22.53188161565321 2011 14.542208821462616 2012 12.226265625601176 2013 17.211608874771958 2014 20.358529844846224