Annual % of GNI
1975 12.61699253059868
1976 18.172435173842036
1977 26.231890269485913
1978 18.860793333195133
1979 14.784009076416117
1980 17.82404264997942
1981 20.315483979919374
1982 16.82974226865266
1983 20.935496997855573
1984 18.555261505149463
1985 24.821541955928172
1986 21.94148889374426
1987 18.92244209223745
1988 20.99596217509911
1989 15.040624342059129
1990 19.838159485461645
1991 20.302582422007017
1992 15.807178783619367
1993 39.638627781106074
1994 35.60314885261501
1995 24.691733394671274
1996 16.795726582441322
1997 16.4872009968646
1998 16.40983675717927
1999 18.737632629972456
2000 13.01345541526671
2001 9.888968639801883
2002 8.61274501628861
2003 9.581505097246524
2004 12.067498819459423
2005 13.877283732530207
2006 16.104945210637744
2007 16.73740953180562
2008 15.418455306914202
2009 7.584531623133698
2010 8.10830691129217
2011 7.295998226764348
2012 7.3029581172584335
2013 5.674412199569757
2014 6.839823268174153
2015 7.550177449043969
2016 14.146435679461945
2017 13.534408905143374
2018 14.68972640501522
2019 14.300107049636459
2020 14.52863477952768
2021 16.538505529495314
2022 15.807890183169745