Year	% of GNI
1981	20.9437623482403
1982	16.058455516696
1983	25.0575516771382
1984	24.2155329935283
1985	24.5460134247141
1986	21.9230682977685
1987	25.3240412203968
1988	24.5098446385715
1989	27.5149913424319
1990	23.6145247647993
1991	23.1839645154095
1992	24.4724972467817
1993	30.1456112773908
1994	30.6947079653726
1995	28.9910136049806
1996	28.5738250435369
1997	29.9054516681645
1998	23.7624246280495
1999	14.2902631372463
2000	28.1539097079126
2001	28.2472995397379
2002	23.7273810974092
2003	21.5110221608592
2004	21.7629405591822
2005	25.5834120624887
2006	26.9242646000448
2007	26.2590550111252
2008	29.5008043837438
2009	30.1102485336039
2010	33.6226923768118
2011	34.1662777529407
2012	32.9144358565005
2013	32.0806307225782
2014	31.7328858513683
2015	31.1568601011495
2016	30.9123569191041
2017	31.8887882006076
2018	32.6535747143641
2019	31.8716276579178
2020	30.1936963641418
2021	33.9769292554703