Year	% of GNI
1975	8.48192912176098
1976	3.41756034079393
1977	5.97714519551395
1978	12.186266724733
1979	22.7176255660281
1980	25.4670237759382
1981	26.9211363001967
1982	27.9946134324817
1983	26.8294023544869
1984	24.8548672914544
1985	23.803378466212
1986	23.7834785082264
1987	24.2676620415345
1988	24.765021001542
1989	23.7530988636116
1990	23.8758967650743
1991	23.8098339268513
1992	24.5095925269679
1993	25.6152159007453
1994	24.5299046232358
1995	21.107259741447
1996	21.9094460271365
1997	22.4622214486706
1998	23.010856758975
1999	23.8175531171248
2000	22.5338687541313
2001	23.3722178119038
2002	21.6401768792984
2003	21.8544372354899
2004	22.3404165626061
2005	24.462293409963
2006	23.0033112685698
2007	23.8872842435122
2008	18.4730275521698
2009	24.2092297475593
2015	32.8231886824024
2016	35.348675548628
2017	38.2230870414385
2018	36.0383077662093
2019	32.9476329390481
2020	33.0926250023997