Year	% of GNI
1977	27.6746245827593
1978	29.8089241445359
1979	27.0362476094025
1980	24.9045712292334
1981	20.9211556858111
1982	29.6511719621368
1983	25.4133967135019
1984	13.1261035584178
1985	15.9519933053074
1986	15.3901199677066
1987	22.6604894591871
1988	16.1283251182646
1989	2.44637283141832
1990	16.5003632719367
1991	12.5565839598192
1992	17.9974221005833
1993	20.5253618536287
1994	23.5757552742758
1995	23.4907331192653
1996	25.626953089678
1997	26.9571377549661
1998	21.2159473094069
1999	19.4836318376811
2000	22.9484562856594
2001	20.5524932711482
2002	19.0737778362451
2003	19.0300208582177
2004	16.1586854644425
2005	18.5286393572053
2006	21.3806148513257
2007	28.1447614068283
2008	29.7131016681336
2009	28.7394924878672
2010	24.5688770192073
2011	29.0630999373454
2012	31.5863128838631
2013	32.5175696749652
2014	30.0793442422577
2015	33.7678495206173
2016	31.9989078778996
2017	33.6431110443896
2018	32.2431404448064
2019	31.2544603435509
2020	27.1302429104699
2021	30.7174257314639