Year	% of GNI
1970	0.30721544846110205
1971	0.2849899312855508
1972	0.27468610409127636
1973	0.21370369549815008
1974	0.2695349802591282
1975	0.24578703900857068
1976	0.21724610520323992
1977	0.26942609894681946
1978	0.2972413629843174
1979	0.2581455975817779
1980	0.28871345692789596
1981	0.3230512256167652
1982	0.2870596597834318
1983	0.25639019095312
1984	0.2492573530185829
1985	0.26998292471060886
1986	0.27761488498279824
1987	0.31973108240104114
1988	0.30942582599258406
1989	0.32470636855686646
1990	0.41823911850254936
1991	0.4254488485500152
1992	0.43403016448600623
1993	0.4153637923413298
1994	0.39474485710864204
1995	0.33652780164547813
1996	0.2712100685318513
1997	0.23434739358961307
1998	0.29361856190999064
1999	0.35036454755979546
2000	0.2675548357026007
2001	0.25130702045587944
2002	0.2646463291799177
2003	0.21918217468978635
2004	0.20491030344747127
2005	0.17204501704426162
2006	0.15882193605980843
2007	0.13135808460034154
2008	0.11575074070401688
2009	0.12306546500141008
2010	0.08881280793109107
2011	0.0837012960371108
2012	0.08530289679541395
2013	0.07223260278002354
2014	0.0760015021238869
2015	0.06890267989896691
2016	0.06611734042799389
2017	0.06283750380316817
2018	0.044234005339020915
2019	0.03588611549399935
2020	0.05988516522546767
2021	0.04603981278461853