Year % of GNI 2007 10.337759702419403 2008 9.257323465081706 2009 14.95550119759938 2010 14.179313849709096 2011 10.735116160256052 2012 11.294818748781896 2013 14.492141384747743 2014 13.625894230304555 2015 17.116819857273864 2016 17.284858241246543 2017 16.611126499153787 2018 19.68548441319106 2019 19.32728311211301 2020 21.246152235284725 2021 22.443097528177493 2022 21.338518939937074 2023 20.568105307139497