Annual % of GNI
1968 17.18285534998521
1969 16.283518233820384
1970 17.46473129777162
1971 13.869889617465697
1972 17.094811914288247
1973 19.209822817507348
1974 19.5701705547757
1975 17.128534025081805
1976 19.168210671951403
1977 21.37270511008903
1978 20.257051085935732
1979 19.44777217538994
1980 19.59311411030385
1981 16.612514675150074
1982 14.519420030555432
1983 14.865204367376748
1984 15.696407924058859
1985 17.693616031041238
1986 23.25224527527223
1987 22.545723615412154
1988 23.472091468508623
1989 21.888688241721738
1990 21.937906976298265
1991 23.95466595984568
1992 19.852395384492972
1993 18.445493728166152
1994 19.456343725455103
1995 18.832047376147724
1996 15.437052774104416
1997 13.799129803477536
1998 13.099089364951531
1999 13.75564440719351
2000 13.87453715424786
2001 13.159397800621196
2002 14.309835059280323
2003 15.940948813305152
2004 17.43353893082531
2005 18.907156632789217
2006 19.529822023748125
2007 19.231288392342183
2008 20.268178999132452
2009 19.241715438170612
2010 19.120597306858077
2011 20.202243312668656
2012 19.101833326592928
2013 18.841323448926975
2014 18.687091544771537
2015 17.599225938593637
2016 17.673315375344743
2017 17.400026222627105
2018 16.781017512783034
2019 16.539889236514096
2020 14.573021719169123
2021 13.268801528277788
2022 13.839720979211586
2023 10.858758794288791