Year	% of GNI
1977	23.760460315665824
1978	22.87067749663971
1979	23.08705980890336
1980	27.610738116353925
1981	27.2404427618694
1982	26.182035042326326
1983	25.334420902097285
1984	24.847356499211514
1985	23.103543423380767
1986	24.211929133109724
1987	24.08520225401409
1988	25.663939929772138
1989	23.77915707934439
1990	23.454619736818348
1991	19.0136315915586
1992	19.09182304842914
1993	20.006231622463968
1994	21.085449641958416
1995	21.491372970572343
1996	21.532201999258948
1997	20.94310425904085
1998	20.709421145046434
1999	20.017592629765637
2000	21.740873014799234
2001	22.33405070340919
2002	24.53171808756838
2003	24.257529796965457
2004	23.596075310870862
2005	24.41443988085264
2006	26.876798753333468
2007	27.06686638053744
2008	26.311674383405055
2009	22.801220630284778
2010	24.67412430483539
2011	25.921557044599627
2012	27.177858479320637
2013	26.542587282637164
2014	25.43977220486507
2015	23.90663741633578
2016	23.304000034821886
2017	24.67467463868013
2018	24.69170564802433
2019	24.52226105908349
2020	20.400783156491162
2021	22.14955403781848