Year	% of GNI
1970	20.9418531578463
1971	22.325172085836
1972	20.206241348792
1973	21.219657851401
1974	18.5754350378875
1975	19.0226071750804
1976	15.9240081803185
1977	14.9892335896599
1978	14.5532909854932
1979	15.2421048339125
1980	15.0082563908579
1981	14.4327991990394
1982	12.5722435380835
1983	12.4005501123497
1984	12.6856652483913
1985	12.6001164196904
1986	12.2506631423473
1987	12.5098043559357
1988	12.1747093606872
1989	12.0326677976564
1990	11.9794990660844
1991	11.5280880813962
1992	12.187546135207
1993	11.7949300496605
1994	12.0608467285532
1995	11.7656641410027
1996	11.8415336975218
1997	11.4689035407355
1998	12.0427680026221
1999	11.6460486224398
2000	12.210580365303
2001	12.3730873381001
2002	11.8072857301665
2003	11.7913095751443
2004	10.8469227853867
2005	10.4476024605522
2006	11.6026955301234
2007	10.7168996805635
2008	12.3309793640913
2009	17.7360076656288
2010	16.0732070442922
2011	16.4841352173602
2012	14.9236942382646
2013	15.8679821153691
2014	15.5563470672005
2015	17.8685104063178
2016	17.4512609998241
2017	16.2352698122631
2018	16.7305025291789
2019	18.0298318446022
2020	17.9092934962125
2021	16.5917043421877