Year	% of GNI
1970	2.3878467339458247
1971	1.6357340643581793
1972	1.832182340269104
1973	1.9658579785389003
1974	1.5276949449772586
1975	1.6102773008848268
1976	1.9933581569987935
1977	2.1413778970706927
1978	2.5133951496538813
1979	2.5876568871986434
1980	3.1396272357127786
1981	3.48150237291564
1982	3.692896945765933
1983	3.782071056860649
1984	3.807790675862682
1985	3.8986045054007032
1986	4.527778509773459
1987	4.2806484954219
1988	4.31835573971547
1989	4.281576687153123
1990	4.407156007261377
1991	4.673860643505555
1992	4.552784177724221
1993	4.564387031662907
1994	4.814634173955396
1995	5.006468023930882
1996	4.224126423803137
1997	4.102264935210508
1998	3.8663226253408274
1999	3.676268020808773
2000	3.7506426222940283
2001	3.9036262740528866
2002	4.203136832829123
2003	4.741531585797841
2004	3.775559741733673
2005	3.4405242306270143
2006	3.038022558732404
2007	3.313071951578681
2008	2.5359747036547717
2009	2.127423614573074
2010	2.1064240186064747
2011	2.1099935369398253
2012	2.1101165486590325
2013	2.3262172980216036
2014	3.528871754092945
2015	2.5509056915287105
2016	3.3205334456817943
2017	2.895826014088895
2018	3.176272883984204
2019	3.207631118130145
2020	3.3786034620299277
2021	2.9533139497993433
2022	3.1645483747870844