Annual % of GNI
1975 23.284360515753644
1976 23.501667779244908
1977 23.047559031505976
1978 23.38593425394362
1979 23.223271069589227
1980 22.348950622539288
1981 20.765315728757493
1982 20.46178220264136
1983 20.744350755355093
1984 21.405956104633347
1985 21.483539591221266
1986 22.324774393385503
1987 21.936066615533658
1988 22.889078006095804
1989 23.21611342449218
1990 23.350578279990916
1991 22.564851645511702
1992 21.834565493589206
1993 21.389295579146534
1994 21.795424505774385
1995 22.76640020299868
1996 22.466870569005366
1997 22.961512618991023
1998 23.298900844541443
1999 22.98315768345835
2000 22.915314104791776
2001 22.874753344614792
2002 22.663966655563147
2003 22.25299739296043
2004 22.925592919436387
2005 22.89787157517895
2006 23.74534269219598
2007 24.418936260558752
2008 23.322747535130613
2009 20.999022061014422
2010 21.626182707814834
2011 22.40885217346223
2012 22.126117765063828
2013 22.432591430120166
2014 23.09981529698046
2015 23.912314076352544
2016 24.27485863862989
2017 24.815794094610517
2018 25.18018683598166
2019 25.5856960140312
2020 24.880925015804134
2021 26.635337237590853
2022 25.52502210035549
2023 25.702618330142045