Year	% of GNI
1990	12.682830562480559
1991	15.578820704056975
1992	17.517759919560355
1993	19.253747272227955
1994	20.62885998471458
1995	19.47266237546324
1996	19.104613129508575
1997	19.84220046896121
1998	18.32624299871098
1999	16.07028374151352
2000	15.54019858124157
2001	15.690576236015904
2002	16.91466302259942
2003	18.744861070099756
2004	19.733346540575845
2005	19.803624351155463
2006	21.288489671432473
2007	22.9178629154147
2008	22.744519980487542
2009	23.837911964428685
2010	23.151194996738223
2011	20.10515160780385
2012	20.758270811535017
2013	19.537322939857145
2014	19.52841503727144
2015	18.174499646358218
2016	17.501983236107304
2017	18.06060332143273
2018	16.70237202942724
2019	15.37393127960245
2020	14.572599733811026
2021	15.463968211221946