Year	% of GNI
1977	22.694219011012038
1978	22.253978798957093
1979	22.64854023783197
1980	26.80707871630012
1981	23.525299346339207
1982	19.787626797679483
1983	19.847059854754253
1984	18.68343782530728
1985	19.050534623355624
1986	18.731114942101883
1987	17.06910050493938
1988	17.403618934318892
1989	17.539981088650293
1990	14.43662847496388
1991	13.436641973466546
1992	16.183802176081777
1993	17.80056287024596
1994	16.889751319055982
1995	17.58379685787244
1996	17.30970992092573
1997	17.06815925162514
1998	15.902500609347866
1999	15.625096840082826
2000	16.586132653169585
2001	17.35108035274289
2002	20.381503300078773
2003	20.64811242041019
2004	20.924379419861204
2005	21.960044761583003
2006	23.252218374201483
2007	23.648933762028985
2008	23.191698606717875
2009	18.92323987217041
2010	20.892084481883447
2011	21.042795436463603
2012	18.602393497015644
2013	18.28449019251772
2014	18.444588090714714
2015	16.743420585876894
2016	17.721033241124097
2017	18.555283332940945
2018	18.475421169045113
2019	19.116534644648727
2020	19.63078878561018
2021	21.230717412396473
2022	20.632387240964395