Year	% of GNI
1970	3.0394689232794514
1971	3.1321949906797486
1972	3.254891213460762
1973	3.267197477796879
1974	3.2659738274302277
1975	3.2636499271242405
1976	3.247114316969092
1977	3.093949708086028
1978	3.1029901323431504
1979	3.1859391593537634
1980	3.106156353360127
1981	3.506062309009747
1982	3.7195801466008716
1983	2.677259722406319
1984	2.8842683976994925
1985	2.7075236729221173
1986	2.7430458202587573
1987	2.7813476038333333
1988	2.5116012751753023
1989	3.5733661321332124
1990	3.242872769740507
1991	3.25828075527212
1992	3.5505066976188906
1993	3.461516611416532
1994	3.8762131234499155
1995	3.782328523936423
1996	4.051299635800919
1997	4.114523051024599
1998	4.003687589576156
1999	3.7844497364498886
2000	4.03205060817844
2001	4.166437127818351
2002	4.172693809320632
2003	4.387810240011076
2004	4.195305868355684
2005	4.4165247073637115
2006	4.496615752454908
2007	4.5826408864165
2008	4.800278915910238
2009	5.089799839685043
2010	5.031692022404631
2011	5.09319165519607
2012	5.111485907001134
2013	5.068694476635519
2014	5.2307724294556035
2015	5.417443312802012
2016	5.380710602960372
2017	5.331351356352908
2018	5.1584656495059535
2019	5.095045607058696
2020	4.944711509448466
2021	4.900503394085612