Year	% of GNI
1990	1.9356402759951683
1991	2.464910178048221
1992	2.5266993846898362
1993	2.7890505655189486
1994	2.700420872254907
1995	2.737157190713734
1996	2.731726710756862
1997	2.862929015598644
1998	2.977632562868738
1999	3.106307157982947
2000	3.1805500549966044
2001	3.31111075383983
2002	3.3815698027362924
2003	3.106597096065473
2004	3.0287633342593185
2005	2.919176678106307
2006	2.8922875192408646
2007	2.6557273231657295
2008	2.8718127783253604
2009	2.91862637395269
2010	2.6143871985982754
2011	2.605529363214636
2012	2.9021865491789227
2013	3.0307561260791416
2014	3.130793866825722
2015	3.134970133528833
2016	3.016547549493844
2017	2.9007996007176144
2018	3.090629858345448
2019	3.1255630134774943
2020	3.140778507270772
2021	3.041489688365761