Year % of GNI 2011 -0.00853589472213815 2012 6.31309945870491 2013 9.57048954743961 2014 26.1121090550647 2015 27.2077114948856 2016 26.1811747600191 2017 29.1577290234975 2018 22.3212410630413 2019 23.7018237741586 2020 17.8414826174739 2021 -8.49903572737064