Year % of GNI 2000 4.81376692142619 2001 3.49515032937497 2002 3.2862236129408 2003 4.55362427681674 2004 5.51605030869042 2005 5.93860833234071 2006 6.98391820075655 2007 6.21187284464255 2008 7.13285709754028 2009 4.73585100782223 2010 6.03022231636259 2011 7.91540143142136 2012 7.71995160493074 2013 7.78797412296484 2014 6.80411322998423 2015 4.13980617426691 2016 3.62806689609405 2017 4.3006241727717 2018 5.47300508999735 2019 5.15832714874024 2020 3.41338166463756