Year	% of GNI
1977	8.369195767601703
1978	9.338877198643129
1979	7.655234144269087
1980	9.732016286484399
1981	8.758152665934407
1982	5.42534038461077
1983	5.606412091939244
1984	6.22285400595973
1986	4.733959509027374
1987	3.658218599001079
1988	4.0152825908546355
1989	3.8658339354839018
1990	-0.22519974982641222
1991	0.24726130780328415
1992	1.7169191034472526
1993	2.7691375554279354
1994	2.123060896529062
1995	2.72185633107918
1996	1.3474579935586881
1997	2.2772256763730097
1998	1.0940335737129963
1999	1.2903512101574126
2000	1.1900105190424464
2001	0.600681168279479
2002	2.455147965074059
2003	3.9463627448415965
2004	4.2695388078766525
2005	2.3209954334558915
2006	2.5293777795561736
2007	1.190596706018729
2008	3.901690062246337
2009	4.413253857003558
2010	3.676770007885919
2011	2.430651704540352
2012	5.423375825956632
2013	2.4148695194310337
2014	6.13415724515739
2015	4.825919621545195
2016	4.066097341149198
2017	4.789649655862172
2018	4.875137336311273
2019	6.758594791026501
2020	9.131421536677575
2021	8.532442860746151