Year	% of GNI
1981	20.943762348350642
1982	16.05845551671692
1983	25.057551677175464
1984	24.215532993447674
1985	24.54601342896921
1986	21.92306829787379
1987	25.32404122048337
1988	24.50984463853396
1989	27.514991342517074
1990	23.614524764889232
1991	23.183964515409542
1992	24.472497246781714
1993	30.14561127739081
1994	30.694707965372597
1995	28.99101360498064
1996	28.573825043536914
1997	29.90545166816446
1998	23.762424628049487
1999	14.290263137246333
2000	28.153909707912582
2001	28.24729953973794
2002	23.727381097409243
2003	21.51102216085925
2004	21.762940560610886
2005	25.58341205649592
2006	26.92426459411066
2007	26.259055011125167
2008	29.50080438350594
2009	30.110248533506965
2010	33.62269237926007
2011	34.166277755315214
2012	32.91443585508964
2013	32.08063072294525
2014	31.732885852639033
2015	31.15686010186585
2016	30.912356916703132
2017	31.888788198808207
2018	32.65357471536795
2019	31.871627652390423
2020	30.04972129674205
2021	33.856454556868556
2022	38.00714001476348
2023	36.89794072775311