Year	% of GNI
1980	19.852039190772338
1981	9.295900181665052
1982	5.150441543557096
1983	5.733167095739502
1984	6.121289536689753
1985	4.940754758071798
1986	2.594929003303706
1987	4.5609482224549724
1988	3.025181691168718
1989	3.64283370435427
1990	2.870039966324137
1991	2.3503956463313544
1992	2.6570094773811817
1993	3.2557904730010634
1994	5.009873178791489
1995	3.91805160930261
1996	4.5887043257297
1997	3.7968996466809077
1998	2.3894842016294984
1999	3.841717376686648
2000	6.369766282373618
2001	5.145185079431553
2002	5.70281535645895
2003	5.544567037348811
2004	7.082768460007795
2005	8.728399859181568
2006	8.607351463487639
2007	6.826386152399023
2008	7.06502221381803
2009	3.8287069118357744
2010	4.766548805584175
2011	6.252566933363827
2012	5.159661968213814
2013	3.9622962053379998
2014	3.228492591539596
2015	2.4045770075943005
2016	2.2041797762865434
2017	3.1845426603569487
2018	4.346125324571309
2019	3.9809126147508778
2020	1.9934599374606936
2021	3.8303253523759113