Year	% of GNI
1970	24.1674814122635
1971	24.5599645285021
1972	25.1483717067101
1973	16.4359208487923
1974	14.5804163781612
1975	16.578206805071
1976	13.7389288747117
1977	15.4283744487507
1978	19.8367859428062
1979	19.64083045865
1980	11.4227445387758
1981	10.7032320697018
1982	11.7109927915263
1983	10.6394817308515
1984	13.1620522694906
1985	11.6887693930732
1986	23.6154086444865
1987	23.0789805831327
1988	15.2436615470294
1989	18.0047598108636
1990	18.8750655649169
1991	18.8559925729284
1992	19.4607167153346
1993	19.8638591578025
1994	18.3944063172457
1995	19.5814400835197
1996	19.4650055077963
1997	19.7272883988476
1998	20.1915600708761
1999	19.4216599099191
2000	19.2736420808512
2001	19.1652969905884
2002	18.6919697710881
2003	18.8527146013866
2004	19.7142269115247
2005	17.7890725406031
2006	18.4097134162305
2007	18.7195155223944
2008	18.2841874185246
2009	18.2951332153701
2010	19.1070865228812
2011	19.2867748914979
2012	18.7255696602725
2013	18.9191657268194
2014	18.1306554719955
2015	19.324351615032
2016	19.586581311314
2017	19.7225160852427
2018	19.8696973049412
2019	20.5665740630373
2020	21.5609513898342
2021	23.7056948872327