Year	% of GNI
1971	1.3733948967867784
1972	1.4070977401018703
1973	2.529273120522467
1974	4.327102259676794
1975	4.24375550114358
1976	4.185551887920302
1977	5.319325340013851
1978	4.774453619010744
1979	7.947891704857299
1980	4.699462981808893
1981	3.375227522576591
1982	3.0088403877740317
1983	3.401929019746176
1984	3.425829250439691
1985	4.171050246070538
1986	2.933073500843507
1987	3.800553173380492
1988	3.5899824558186384
1989	4.674848203674141
1990	5.619474863851618
1991	3.9158987231132003
1992	4.176172178603027
1993	3.9720558268627766
1994	4.160776699999431
1995	4.431724101068641
1996	4.243379572757295
1997	3.8056755671958236
1998	2.840462043227203
1999	2.9965319357657885
2000	4.233719895071447
2001	4.084176920286711
2002	4.0184168679273595
2003	4.043804322557265
2004	4.031083607385522
2005	4.737356799796468
2006	5.492147475426578
2007	5.041710078185047
2008	7.00616436029654
2009	4.426689545972199
2010	5.8678391201330875
2011	7.265737897499341
2012	6.17944593140114
2013	4.807776832365312
2014	3.769609806697651
2015	2.231298211375537
2016	1.9739169291672698
2017	2.7852787672705603
2018	3.5873701741876274
2019	3.257897977761587
2020	2.277137855279789
2021	3.8166217983209085