Year	% of GNI
1990	17.6287418612707
1991	9.92898215899842
1992	11.5810136795413
1993	10.0616172210677
1994	12.2986884694817
1995	13.1318610442339
1996	11.7101926377966
1997	14.5314369773314
1998	16.624132526557
1999	14.7125446918599
2000	14.3147895480387
2001	15.191225421622
2002	12.0811832317771
2003	11.005794521396
2004	12.2993020667526
2005	11.304702767452
2006	14.193827319979
2007	15.4313777051269
2008	13.9951634073948
2009	15.6562080631764
2010	16.1269642136136
2011	14.2851088116417
2012	14.8179198327671
2013	15.2556860906292
2014	15.0262650050644
2015	16.2865784885105
2016	17.4958278976436
2017	15.8434765058058
2018	15.7665890970931
2019	16.0450612576737
2020	15.3086884431399
2021	16.9215221014424