Year	% of GNI
1976	26.9669817305772
1977	23.3235568039446
1978	24.4813232116135
1979	28.4789650595116
1980	26.2085453502926
1981	25.8877652205691
1982	23.464099375033
1983	27.5491772953654
1984	26.5279937878647
1985	24.7026127648127
1986	20.2339458636811
1987	24.090660204162
1988	23.9360330442419
1989	24.0034726689231
1990	24.2392722865334
1991	23.2238822302998
1992	22.9378365632996
1993	20.912320145334
1994	22.4054267117085
1995	21.3480694075839
1996	23.8687699208928
1997	22.6527569149975
1998	22.7759209036938
1999	23.6716753896525
2000	23.1900563315614
2001	23.0195861425816
2002	21.1609081119821
2003	21.0953319612572
2004	22.0013902023449
2005	21.3041249236283
2006	22.1826602380455
2007	21.8823030016548
2008	22.4636368796837
2009	22.033918886921
2010	22.431783509933
2011	17.2724045402704
2012	17.5979828375381
2013	15.5457884414263
2014	18.6519202447404
2015	13.2876027069909
2016	11.9215711969058
2017	11.2274069293457
2018	12.0684262119934
2019	11.5939056595676
2020	6.31465337851917
2021	8.21713882360521