Year % of GNI 2000 41.9251170708689 2001 11.1530695599816 2002 25.9979797427382 2003 22.509954395648 2004 31.0821255646795 2005 40.0527945980316 2006 42.7238069023272 2007 40.1084106894118 2008 38.6553609726572 2009 22.8925890939446 2010 33.207019795823 2011 33.9351284743399 2012 32.7479323366178 2013 26.5683804744281 2014 23.8549289275026 2015 17.7406231044398 2016 16.8736467549213 2017 16.3070688603404 2018 19.4984028237511 2019 27.5477242476977 2020 24.6377072747899 2021 35.4541885766371