Year % of GNI 1970 11.5468681595238 1971 10.5473410179845 1972 10.9016830301007 1973 10.4542038659853 1974 10.0834988555364 1975 11.0359354637938 1976 10.4808250190261 1977 10.3583982729073 1978 10.4337382468956 1979 10.2626550985198 1980 10.2339355030739 1981 10.8456007668495 1982 11.7065375196736 1983 12.3856636227025 1984 12.7012764641286 1985 14.6031631656184 1986 16.6921546739634 1987 15.6765204504957 1988 14.4499591046677 1989 13.6856285855739 1990 13.2709436647338 1991 13.7294095131394 1992 14.3656488989805 1993 14.8846955527132 1994 15.4738211827317 1995 15.9787667858646 1996 17.0288763154961 1997 18.0738131599804 1998 22.88946934133 1999 22.1902177676317 2000 19.1403951999284 2001 19.6052580175731 2002 18.6277303177387 2003 17.8897320490793 2004 16.7420044482512 2005 15.7633534638968 2006 15.8042856784141 2007 15.3513697635818 2008 15.32580461488 2009 17.1637379645468 2010 17.4472015171452 2011 16.7259568252046 2012 16.9851742500821 2013 17.614109476424 2014 18.6066265205044 2015 19.4588764667559 2016 20.2175649014305 2017 20.4798695721542 2018 20.8763558812943 2019 20.807478864815 2020 20.8863992360404 2021 21.2394856840184