Year	% of GNI
1977	17.937718462027327
1978	11.382344592676697
1979	10.892475562266393
1980	17.52998001332445
1981	14.757571002667504
1982	21.524849657841987
1983	23.32057956469924
1984	14.92004264392324
1985	18.452409628167366
1986	18.318843112412075
1987	18.757652774238462
1989	20.697174447174447
1990	20.132968060938126
1991	15.404684601113173
1992	19.91805445413693
1993	17.801660143069242
1994	17.13846350996348
1995	28.075837192118765
1996	32.30664019225583
1997	29.53124393180318
1998	28.372505168994472
1999	34.400531952198406
2000	33.262313404155854
2001	29.44809229787669
2002	32.802415111766955
2003	31.747817937591122
2004	33.219205359677
2005	30.39699557556439
2006	27.17983767620675
2007	28.413534949368138
2008	26.785431452307574
2009	25.738776938602772
2010	24.006932458223726
2011	21.062245473819075
2012	21.39635023493422
2013	20.969408470007586
2014	20.682849547402935
2015	20.66731014739807
2016	23.045848356630305
2017	16.533966520168796
2018	15.594130672067024
2019	21.895958217349964
2020	9.992983855953682
2021	9.676500352955458
2022	16.94984782460765