Year	% of GNI
1970	3.505849555239974
1971	3.4381730689979997
1972	3.5045039080186005
1973	3.4744540529322525
1974	3.7666475962338697
1975	3.9417840420052332
1976	3.933412379800594
1977	3.9785757524912317
1978	3.9841500775008853
1979	3.981347192974453
1980	4.017715136862137
1981	4.156407216055759
1982	4.214791873506669
1983	4.234946143926853
1984	4.253023299544021
1985	4.273745426650368
1986	4.221313194706657
1987	4.27457856403174
1988	4.205856090012319
1989	4.032089268664776
1990	3.9099203370212696
1991	3.9647764214475902
1992	4.244614519014722
1993	4.532872222586476
1994	4.554087911445715
1995	4.515163049538852
1996	4.548776520321556
1997	4.655547068704521
1998	4.3828116227550575
1999	4.362083037901294
2000	4.314152098768193
2001	4.423629871582936
2002	4.394452292386067
2003	4.475555776713432
2004	4.434146388019409
2005	4.380611574086278
2006	4.404586331144985
2007	4.3594364229361995
2008	4.502693931655506
2009	4.8085943400411075
2010	4.767773512281676
2011	4.665761368437114
2012	4.722012747303758
2013	4.621611082580877
2014	4.604285453580892
2015	4.555851843789108
2016	4.512990299237191
2017	4.511452472207642
2018	4.524629457132867
2019	4.492742132561614
2020	4.499532582930843
2021	4.498227792288628