Year	% of GNI
1970	9.179401559096416
1971	9.009170226151568
1972	9.29022517300529
1973	9.069883235379962
1974	9.013483132340744
1975	9.517076269097881
1976	9.761702140969536
1977	9.888112893407477
1978	10.087915609416887
1979	10.339175399758654
1980	10.909054220858135
1981	10.951850599344182
1982	11.277106497394692
1983	11.250629827737276
1984	11.20799397886378
1985	11.343459375802727
1986	12.012001529317885
1987	11.903692294502024
1988	11.63292415426297
1989	11.611685564017968
1990	12.464583389375278
1991	11.218455990701365
1992	11.07730849154291
1993	11.347432935254373
1994	11.388324792813846
1995	11.697495105394777
1996	11.472090332231975
1997	11.856765800479886
1998	12.595527007203655
1999	12.74400161448101
2000	12.615969696132797
2001	13.176161136472356
2002	13.248210200346904
2003	13.379072436316829
2004	13.37235358244558
2005	13.324419663221816
2006	13.366384305415165
2007	13.466864832791183
2008	13.922601923670804
2009	15.0233333878566
2010	15.312554995936807
2011	16.085028007199554
2012	16.88992672627169
2013	17.52781850988311
2014	17.893911686145827
2015	18.405010677814914
2016	18.38499999642667
2017	18.251640833762956
2018	19.061112732566798
2019	19.389217744142332
2020	20.516633443547658
2021	20.58551392902612