Year	% of GNI
1970	1.9886927780122903
1971	1.9062091074625456
1972	2.166899391263706
1973	2.6363244299880098
1974	2.635826826606362
1975	2.645693015168379
1976	2.7329618016200534
1977	2.7374169034851352
1978	2.968309551299092
1979	3.0080578198341295
1980	2.8983516857683473
1981	2.77807296322483
1982	2.707186424750564
1983	2.8236382019382367
1984	2.8281945979431424
1985	3.2011483970410444
1986	3.532082492984481
1987	3.96237001621305
1988	3.877793963824411
1989	3.839354332911915
1990	4.832792953716824
1991	5.168323112845836
1992	4.945452250507261
1993	5.475565314642504
1994	6.215776935260067
1995	6.649104778971196
1996	6.968746281346282
1997	7.299966465659399
1998	4.207279346529079
1999	4.056784404922936
2000	3.3974919037895823
2001	3.209065894204987
2002	3.1030246000485064
2003	2.977453080146853
2004	2.834215022992021
2005	3.000710092182197
2006	3.2199524783571607
2007	3.2447741283450138
2008	2.094796700804697
2009	2.1532377040614894
2010	2.0525636542397323
2011	2.037053429920844
2012	2.099734690526277
2013	2.1144774587744735
2014	2.0699336632337455
2015	2.1643166792568174
2016	2.306151247355181
2017	2.2714095352332837
2018	2.1968142676344424
2019	2.1553302766852838
2020	2.1752641636435315
2021	2.2258579013953845