Year % of GNI 2010 13.503757283074998 2011 17.411792319823242 2012 13.861570148414959 2013 16.80436758700145 2014 12.072985201357552 2015 10.080804989215954 2016 10.847702431300428 2017 14.828896234739359 2018 12.524129904893908 2019 15.479725054833429 2020 11.23414434846061 2021 16.49715553490127 2022 15.135717114401867 2023 12.780796209712001