Year % of GNI 2005 13.26837013 2006 6.83036343 2007 9.262678699 2008 4.628817986 2009 5.854854535 2010 7.8713228 2011 8.141268246 2012 7.858056146 2013 5.055790394 2014 7.293999384 2015 11.68800259