Year	% of GNI
1970	3.7543693575939754
1971	3.6891111497751723
1972	3.7509688326740527
1973	3.758704363007132
1974	3.95051129056801
1975	4.226097206833392
1976	4.2391062091126015
1977	4.220668021827202
1978	4.243933005723266
1979	4.177019446059779
1980	4.228214240637472
1981	4.376421645027483
1982	4.383616365066678
1983	4.397491672074406
1984	4.3578320026849635
1985	4.342077092819235
1986	4.291952231925742
1987	4.315709673721935
1988	4.238739876420363
1989	4.063509893546594
1990	4.034662294503502
1991	4.092272894827763
1992	4.350589249855689
1993	4.6657832833773645
1994	4.777231754863738
1995	4.705077591447814
1996	4.749789620948593
1997	4.873645798220679
1998	4.402357492858669
1999	4.340531453418789
2000	4.2844706289149235
2001	4.3835164834313645
2002	4.465447365200824
2003	4.551302032947241
2004	4.5024906026556675
2005	4.498734887372591
2006	4.466497221375477
2007	4.43649693256344
2008	4.521602848112788
2009	4.789518988477445
2010	4.795612689557113
2011	4.676200737299955
2012	4.741120919159344
2013	4.695776953928238
2014	4.716440037193077
2015	4.696640682320576
2016	4.675155128708736
2017	4.680417724025756
2018	4.644202610569951
2019	4.646668108852176
2020	4.652676166024808
2021	4.662573945923908