Year % of GNI 1970 22.5060398048777 1971 21.6691766248543 1972 20.434584525408 1973 21.1466743162529 1974 18.3344203167674 1975 17.4525309324197 1976 18.6368029416305 1977 19.9543688302023 1978 20.3624690827818 1979 19.7542379149912 1980 18.4221518229885 1981 17.3613041593731 1982 17.2493776864363 1983 17.7854255716225 1984 18.048196425804 1985 17.8037925799858 1986 16.5876518701756 1987 16.9590244706754 1988 17.1791022920037 1989 17.1096794413008 1990 15.9587547605336 1991 15.2467756308009 1992 14.0940174789774 1993 13.956747302307 1994 15.7747380568454 1995 15.9424109581244 1996 16.1985855367881 1997 16.4202420820442 1998 17.3243872191788 1999 15.9424940549697 2000 16.4227572847795 2001 16.229302972704 2002 16.0449579460101 2003 15.8665320963828 2004 15.2049997378329 2005 15.6820059675593 2006 15.1632139333467 2007 14.8847748453671 2008 13.6860573002141 2009 11.9302789482255 2010 13.3409514126481 2011 14.0111589322381 2012 12.7076864929924 2013 11.9121152477585 2014 12.6881528142741 2015 12.9800232258985 2016 12.7483068592354 2017 14.9027606565124 2018 14.2240187237004 2019 15.4416103404418 2020 14.3799167486819 2021 16.0154692584177