Year	% of GNI
1990	12.5031342545457
1991	9.88358968430547
1992	12.1532457719474
1993	11.8439468870622
1994	11.5556618950104
1995	12.7873213021859
1996	13.2530143177405
1997	14.1090256267623
1998	13.9718698061123
1999	14.158220015324
2000	14.555153376795
2001	15.3995951987211
2002	14.4341874515853
2003	14.0076333367004
2004	14.6212432326265
2005	15.131944481609
2006	16.0917265008378
2007	14.9703818175657
2008	13.3988460072788
2009	10.80908996401
2010	13.2420741173176
2011	14.277052871499
2012	12.7801343444513
2013	16.1796909710374
2014	17.431646203522
2015	17.8054667305811
2016	18.6010273611909
2017	19.7737297842515
2018	18.3130434035904
2019	18.4636758359596
2020	18.5528904768575
2021	20.4259341997896