Year	% of GNI
1990	20.456886716032
1991	20.0639421526392
1992	20.6371421988639
1993	22.1595106055509
1994	20.986603555813
1995	17.2775272000809
1996	18.145554957593
1997	18.9737842157982
1998	18.0066853658545
1999	18.5271053103516
2000	17.0955024089959
2001	18.5811681162916
2002	16.8842557492612
2003	17.0714648585707
2004	17.0013390159683
2005	18.8982246823737
2006	17.2991254260864
2007	18.1376249469962
2008	12.6991834647558
2009	18.8087455181939
2015	26.2938117244126
2016	29.4730068542265
2017	31.727327307835
2018	29.0647164820609
2019	25.6511820921615
2020	25.321573159814