Year % of GDP per capita 1998 14.03489 2001 18.35665 2002 18.06848 2003 19.76148 2004 10.2099 2005 21.24879 2006 20.16032 2007 19.53311 2008 22.67286 2009 23.35568 2010 23.08243 2011 20.71572 2012 19.05691 2013 22.18229