Year % of GNI 2002 15.893515558340875 2003 15.525474774480179 2004 19.638797574402123 2005 22.233171455228696 2006 22.743447082980463 2007 21.237909264835327 2008 23.354199668411972 2009 16.563744373194403 2010 17.82752854639915 2011 3.8076971541812643 2012 17.42396495774508 2013 10.02557062731271 2014 3.7598512564839086 2015 1.915479980249278 2016 1.396969724432207 2017 3.9123633909502114 2018 6.486065002846977 2019 7.754551198743781 2020 1.2792383827766864 2021 13.579949129428563