Year	% of GNI
1975	5.45970677390462
1976	8.30658862566904
1977	8.15947246109262
1978	7.63277332547082
1979	7.5275232238889
1980	6.53408972690119
1981	7.47636370573536
1982	7.16765513511639
1983	7.10633054699993
1984	7.20011815412548
1985	7.65457812503978
1986	6.55426241208588
1987	7.46882577428732
1988	8.81219375851126
1989	10.7066104164022
1990	11.8279022231495
1991	11.7922533101185
1992	13.352300405982
1993	14.5131255612498
1994	16.5346407854333
1995	17.5610252511605
1996	17.7889416477492
1997	18.0266656818012
1998	16.6076077287225
1999	16.2110066279518
2000	16.4124745560003
2001	16.3460273325056
2002	18.1822884203722
2003	20.7165285736484
2004	23.2387974284744
2005	24.3640836441108
2006	26.5049755965842
2007	27.0379875997641
2008	25.9702290193816
2009	25.2705374664505
2010	26.3771172241655
2011	24.8519324137705
2012	24.8847077203155
2013	23.9564881358273
2014	22.9717340006888
2015	22.1848044805309
2016	20.918800874011
2017	21.6139384470424
2018	21.1535872824902
2019	19.2515401537264
2020	17.119067244678
2021	18.5670034158039