Annual % of GNI
1977 17.169498882949235
1978 13.293951115799745
1979 12.084527820085874
1980 12.625648507641566
1981 16.063188780126964
1982 15.960294596266946
1983 16.809549661887054
1984 20.393557832220917
1985 24.263063676812077
1986 24.83396661677141
1987 22.921113669557823
1988 22.562159099946257
1989 20.246197762837447
1990 20.252547530031222
1991 13.530282856426714
1992 14.96368969643154
1993 13.384428066534088
1994 15.379906468066856
1995 16.099967864477097
1996 14.26121579088433
1997 15.876207105406344
1998 17.783794025912982
1999 16.34032775497228
2000 16.52377663708423
2001 17.36563421505847
2002 15.038497762398963
2003 14.06268633890344
2004 15.53316003121326
2005 14.733808991601688
2006 16.94773214745961
2007 17.60001125267488
2008 15.556766340801321
2009 16.35677363957138
2010 16.37713922305729
2011 14.325668910445824
2012 14.332396449960628
2013 14.405844460322802
2014 14.133775255000922
2015 15.331202471681513
2016 16.624764522074493
2017 15.036992608669127
2018 15.254960639733861
2019 14.789901934765155
2020 15.772901716648844
2021 15.420071253240659
2022 14.199245871399194
2023 13.68922415286106