Year	% of GNI
1990	18.1326476974425
1991	18.3703268891638
1992	19.1871066276768
1993	18.2163549861127
1994	18.5065527590751
1995	20.1093651975564
1996	20.0609886820669
1997	19.5117519333543
1998	19.8420070015208
1999	20.2380014389817
2000	18.8723667080031
2001	18.3767300691172
2002	18.4919567384245
2003	18.8640404561266
2004	17.555098969271
2005	15.7946654010666
2006	15.1553504835121
2007	14.2431061816414
2008	13.6386891830222
2009	16.6519443320239
2010	14.8765123905655
2011	14.1573366867748
2012	12.9084494062508
2013	13.3897931177891
2014	12.4995856631811
2015	11.9199307204169
2016	13.0086394540323
2017	11.90791629319
2018	11.996063362287
2019	12.2156142488843
2020	13.1894453840881
2021	13.5218933394676