Year % of GNI 1968 4.621769477457083 1969 7.404953201358403 1970 10.70810820972036 1971 9.086023733701857 1972 19.48535550074001 1973 19.198895563354267 1974 15.035985118476924 1975 22.200601103527422 1976 18.48870870374138 1977 16.174676447047077 1978 16.866149767363886 1979 20.117908558187263 1980 9.362461360291856 1981 10.9502826180554 1982 7.269553920171964 1983 5.53271511810695 1984 -2.4381192085830077 1985 14.345712375904037 1986 17.395055054335295 1987 17.265740898175025 1988 22.79238785836223 1989 19.620270809815732 1990 16.914841087977287 1991 14.484136213233919 1992 12.321912562143678 1993 16.942661630422066 1994 19.21170357950859 1995 18.81629144348131 1996 20.42464700998266 1997 21.966473183240687 1998 26.939048113863564 1999 25.852481346418426 2000 24.16525960741045 2001 24.752418470268687 2002 24.853520491587854 2003 25.28810115254304 2004 26.95686991448205 2005 23.235356974566727 2006 24.203939468624167 2007 23.88501279488246 2008 20.87038611000881 2009 18.841635448980444 2010 19.21020597380099 2011 17.82385486049132 2012 18.28437317331078 2013 19.159772531449722 2014 20.58149563454069 2015 22.265620643954016 2016 22.55819449574024 2017 23.10276575570006 2018 25.130970269308172 2019 25.478469084323986 2020 24.01443368304693 2021 29.32208889313271 2022 28.772355711232635 2023 28.775910039502726