Year % of GNI 2011 10.193098927894315 2012 1.827381597462998 2013 2.36359236254871 2014 1.375803926552679 2015 0.776392276448726 2016 0.850724174344665 2017 0.717177553577693 2018 0.4576754017298982 2019 2.6540479462587303 2020 3.401357912138307 2021 5.787504354394574