Year	% of GNI
1990	0.6004873546347824
1991	0.6126237576131197
1992	0.5906563693224293
1993	0.6750339114483457
1994	0.6648125742549436
1995	0.6203172899707758
1996	0.6535427788324423
1997	0.7266174744149966
1998	0.7279997394397457
1999	0.7440106261769346
2000	0.851892269504467
2001	0.8935278843045452
2002	0.8496018312173752
2003	0.7394768051078836
2004	0.6743213037179043
2005	0.6762487109506478
2006	0.6737926305909785
2007	0.6061066195728354
2008	0.5597032319335371
2009	0.5858102904804829
2010	0.6301152617976079
2011	0.5889329973806957
2012	0.6471422706831966
2013	0.6276322437170393
2014	0.6081903315894384
2015	0.7437311972950527
2016	0.7503857432434184
2017	0.7406448347945079
2018	0.6986936910628992
2019	0.7061205413446555
2020	0.6855498414846297
2021	0.6656666473741463