Year	% of GNI
1981	12.417998415874466
1982	13.32060315010279
1983	13.715616391679264
1984	13.524623865447067
1985	14.332345048997398
1986	10.921223548995489
1987	12.081849627873524
1988	12.453179064822143
1989	15.432719095655312
1990	10.533674687295758
1991	11.954639873765041
1992	12.344585275496403
1993	13.68623213452346
1994	14.140422986557317
1995	12.913527405658233
1996	13.416322078100416
1997	12.87890234832183
1998	11.582110693049188
1999	11.072588252948654
2000	11.71425973828268
2001	11.463563755173155
2002	13.120405793957904
2003	14.421261216384023
2004	16.5624293258647
2005	17.449885877658588
2006	19.328465137060146
2007	20.21331747834069
2008	21.06617831119088
2009	18.756489557326233
2010	19.3322882155396
2011	18.302442457470953
2012	17.301885282569227
2013	16.084836956040004
2014	15.9436400376593
2015	14.889176636371548
2016	14.381014699346533
2017	15.037456895505475
2018	14.800315054582068
2019	13.763345082514128
2020	13.30550197238328
2021	15.270761928674062