Year	% of GNI
2011	32.62923834252501
2012	30.98106405400649
2013	28.39840539543607
2014	31.536980004327628
2015	29.64263140930843
2016	31.054640266944748
2017	30.772758259127052
2018	33.3122341333842
2019	29.21000922957045
2020	27.284360668664394
2021	25.20853287445474
2022	21.652118545585978
2023	19.224960471232563