Year	% of GNI
1990	46.8150372288148
1991	63.3373867268726
1992	60.9839945062803
2006	0.182500807816602
2007	6.35986786332034
2008	5.70524337374774
2009	1.74101492752556
2010	9.57028273634314
2011	6.12938849872774
2012	17.4036620439436
2013	17.2061032216425
2014	33.7906672130065
2015	38.5146336253468
2016	27.1179788758923
2017	37.5751218044645
2018	35.718002301063
2019	33.2924974056091
2020	32.2488927678595