Year	% of GNI
1990	2.000806297274731
1991	3.3359517747396406
2002	1.520598861745153
2003	1.5456215447522916
2004	1.4004237635732137
2007	1.1982457084722842
2011	2.0505868938306224
2012	1.9000933803268722
2013	1.9459560592734781
2014	1.7291838545160054
2015	1.726473596555271
2016	1.6003498275770776
2017	1.476238816791938
2018	1.4097870112894937
2019	1.3638300601212057
2020	1.3859403689110947
2021	1.3122979920384985