Year	% of GNI
1970	21.523731961993736
1971	21.50421003602898
1972	22.03097420108028
1973	23.667600186195543
1974	22.743474225577998
1975	20.96700749395733
1976	21.58203649476953
1977	22.095654559291123
1978	23.228078634124785
1979	23.559181268077207
1980	22.322461609022636
1981	23.381819516791108
1982	21.52320988299708
1983	19.965006652038596
1984	21.907208212845465
1985	20.549692552237506
1986	19.251838417657268
1987	19.810581809590694
1988	20.649288146174307
1989	19.98413007149513
1990	18.90270368678406
1991	18.703842604653723
1992	17.641978645280627
1993	17.20958722634101
1994	18.104995242522364
1995	18.960215449592376
1996	19.734498827369215
1997	20.806409378879682
1998	21.160859666854012
1999	20.85392543241764
2000	20.786012353574435
2001	19.577630856835604
2002	18.397666558472178
2003	17.64066595907463
2004	18.052765742814884
2005	18.47883916141054
2006	19.34204777936738
2007	17.96222673582158
2008	15.970319723562184
2009	14.29694902450496
2010	15.609318538851065
2011	16.535646564003002
2012	18.44197480415764
2013	18.963308257459655
2014	19.899913606408184
2015	19.76605529657392
2016	18.728222713081408
2017	19.269271283273966
2018	19.39319478994892
2019	19.51648578652284
2020	19.052832370521397
2021	18.27825072400656