Year	% of GNI
1971	5.7073224620051715
1972	8.095934527324648
1973	10.92751065611991
1974	23.279729913464738
1980	26.782724396656043
1981	19.627016013952137
1982	10.905442738432626
1983	9.421049053042726
1984	9.279555258275565
1985	8.033046024908849
1986	5.1564257412251555
1987	6.551710337716328
1988	5.368664342748846
1989	7.321568932367323
1990	7.47188040294994
1991	7.423697774194281
1992	7.927758633304098
1993	7.8487895095461075
1994	7.927431809046225
1995	7.524632561191636
1996	8.836352070901015
1997	7.469142807685896
1998	5.222379856409503
1999	6.770350476821174
2000	9.593159804895635
2001	7.75922927674193
2002	7.521325159627455
2003	8.847480390378333
2004	10.538995150270964
2005	12.62610666513379
2006	12.746494646441542
2007	11.56117503604071
2008	13.190603487247166
2009	8.297625567103193
2010	9.637793096488794
2011	12.520357927334533
2012	12.140495097822583
2013	11.093662050496173
2014	9.991554631950272
2015	6.054304715666135
2016	5.219117867878146
2017	6.259952052011213
2018	8.086072764137748
2019	7.114277575122284
2020	4.439107944679502