Year	% of GNI
1981	17.84440328136754
1982	14.492036657114987
1983	11.807839012590222
1984	8.95580052230722
1986	6.907489714034064
1987	6.56698054322409
1988	7.362735828494212
1989	5.623813891326319
1991	-6.371226074367253
2002	10.33924575571516
2003	13.412494256391707
2004	16.85622840756864
2005	22.437472888006134
2006	24.25648967505102
2007	24.29191031057882
2008	25.787018174672156
2009	15.668555857039118
2010	20.498172896245773
2011	23.520772444362358
2012	23.21863104829844
2013	21.222245573812003
2014	18.27047268241612
2015	10.519659491467031
2016	10.993491104911861
2017	14.014400418260522
2018	17.36855377489222
2019	15.645136248454847
2020	8.394535393232864