Year % of GNI 2011 65.2615625427817 2012 64.5159892067205 2013 61.4569588184287 2014 58.3823258462964 2015 46.5961488600324 2016 43.6809666956113 2017 46.7215944380894 2018 50.7794038363672 2019 46.1605324902827 2020 42.6815167119939 2021 52.2335505072126