Year	% of GNI
1970	5.475361918881822
1971	5.176667283656623
1972	5.100625644926244
1973	4.920867759551152
1974	4.892496878847091
1975	5.176508948874504
1976	5.2461071493058276
1977	5.120717682739044
1978	5.0123039689004205
1979	4.846685329348789
1980	4.843903596266337
1981	5.030075058695351
1982	5.05518712590472
1983	5.097192694700611
1984	5.303101663567258
1985	5.129588693394437
1986	4.271378905156252
1987	5.037786395505386
1988	4.257620354066388
1989	4.170928093173289
1990	4.183876577152015
1991	4.23672750079647
1992	4.556370097695126
1993	4.53440440514558
1994	4.71620977871643
1995	4.477874999920603
1996	4.523380804882463
1997	4.59017335391693
1998	4.1089677125355255
1999	4.078023135877881
2000	4.157313246683119
2001	4.314972371418256
2002	4.37883958066899
2003	4.494728683188956
2004	4.382503049665372
2005	4.3005909768029555
2006	4.383283422831683
2007	4.354471500988442
2008	4.430031255706051
2009	4.559262159384537
2010	4.635117948197556
2011	4.651881576338986
2012	4.510092007733761
2013	4.888511171052187
2014	4.863608159725536
2015	4.471263975089309
2016	4.390131524222787
2017	4.43522412415876
2018	4.353017062896183
2019	4.378370044438572
2020	4.379639842520845
2021	4.406974057674036