Year % of GNI 2008 10.4941821232257 2009 11.0656829153757 2010 8.36311848439165 2011 10.489603792177 2012 13.4015224430598 2013 14.1752526968418 2014 8.3449703208833 2015 9.15647014245888 2016 13.0332088217074 2017 16.5187295041363 2018 15.813382783056 2019 16.0530317663402 2020 13.3894797182979 2021 13.7551585815689