Year	% of GNI
1971	43.5805701332294
1972	47.1435438799727
1973	46.2557891791247
1974	74.7628724065499
1975	59.3599001859347
1976	59.8393215988396
1977	48.2256756520805
1978	34.7370370397828
1979	38.837850818258
1980	51.7468950955129
1981	46.8172571074633
1982	32.3251116726034
1983	22.5456570059217
1984	18.7402067173764
1985	15.4297172532545
1986	12.1401443369798
1987	11.9792966463336
1988	14.9943110573563
1989	12.5018989053955
1990	14.6330050733656
1991	8.41965329502146
1992	16.5336443225978
1993	15.2100949898341
1994	15.3115488352091
1995	19.5044294057979
1996	22.1504124619092
1997	22.7711412578975
1998	16.6209942380422
1999	25.288996537551
2000	30.1164584178819
2001	27.7602282911635
2002	29.070820245935
2003	34.6972581550199
2004	41.8614512014029
2005	48.2542833771136
2006	48.0169594158733
2007	48.1867281542553
2008	51.8382735185627
2009	35.8762774080974
2010	42.9903570652504
2011	49.8711862413468
2012	48.20894242634
2013	43.8130755694322
2014	38.0921897657997
2015	24.8466035790454
2016	26.5873499013732
2017	29.9068179428407
2018	34.860790565379
2019	33.5648203165372
2020	24.0868509812868