Annual % of GNI
1975 21.801872582316438
1976 19.49597268239257
1977 20.080075028818808
1978 19.901581830599635
1979 18.531199649920858
1980 18.411758660026273
1981 19.369810564450223
1982 16.125379526419817
1983 14.08436291099417
1984 16.625437852444023
1985 20.095913688037925
1986 17.891739505424088
1987 22.644687138402077
1988 24.909653700565862
1989 33.97764349433344
1990 19.47351500716746
1991 19.16240604055315
1992 20.58673015218779
1993 20.759751104343007
1994 19.87901369504597
1995 14.64392978613549
1996 14.231667537227299
1997 13.94123267330771
1998 14.183414268968653
1999 13.14193898096875
2000 14.40658625369129
2001 14.050802016414137
2002 15.940650769510334
2003 16.95603125271133
2004 19.42902411946383
2005 18.653300521780718
2006 18.882323733414484
2007 19.766211215056742
2008 19.71014691885151
2009 16.75102291450943
2010 18.36984800807291
2011 19.09186957518655
2012 18.13047083698091
2013 18.407465727510136
2014 16.44076791057417
2015 14.807988002041025
2016 13.712672915734453
2017 13.836442819164711
2018 13.070873054874706
2019 12.588777775031739
2020 15.10853931088076
2021 17.708979514023966
2022 16.299244313989625
2023 16.05590006022933