Year % of GNI 2008 6.987891852826928 2009 8.936764315464247 2010 8.137319295486996 2011 8.270214730616537 2012 8.372513726431285 2013 7.842335102060299 2014 7.53207573758808 2015 8.64868216375072 2016 10.381731980257088 2017 17.090856566508474 2018 16.216252067415077 2019 16.698788090814862 2020 19.379298271867263 2021 21.026211613917663 2022 21.388776687452015