Year	% of GNI
1977	20.65277830563745
1978	20.998488695403907
1979	21.128574614932894
1980	24.109072134647445
1981	21.72111238328591
1982	19.200083045717186
1983	19.090539003392138
1984	18.46163975063913
1986	17.160963833643795
1987	16.018505170174905
1988	16.334103692808636
1989	16.584379328238754
1990	13.708568035178335
1991	12.756824351582873
1992	14.481639452718355
1993	15.876147662054823
1994	16.387188791404853
1995	16.72067905121206
1996	16.11510687408312
1997	15.89691888829042
1998	15.927189742348578
1999	15.505333640025274
2000	17.84708047381715
2001	17.00160264463589
2002	19.063277748890847
2003	19.790132502649307
2004	19.802957057146692
2005	19.239034005400605
2006	20.14373238737629
2007	19.97189174692682
2008	24.129622565368166
2009	19.837943080461876
2010	20.8213082282852
2011	21.23421140344999
2012	23.208152233424173
2013	19.049594232530424
2014	21.409958750355514
2015	18.431503313099974
2016	18.0840925834504
2017	19.337744564629084
2018	19.43669878926183
2019	20.865367542466213
2020	22.88416984837591
2021	24.12065716360696