Year % of GNI 1975 12.982940451133944 1976 14.119888230214698 1977 14.899620598209713 1978 14.4017512944491 1979 15.031758419254524 1980 14.439200902901337 1981 16.62791411177111 1982 16.855304325431852 1983 16.48459191286657 1984 16.237645871975857 1985 17.156204479529947 1986 16.842985842160186 1987 17.95724897018664 1988 18.62612042045778 1989 20.20186475524375 1990 21.23269522971127 1991 22.001792762489824 1992 23.171874927869595 1993 22.954263290750234 1994 24.961449916923236 1995 25.362672876661847 1996 25.331196139727354 1997 25.949193245437435 1998 24.99765439068415 1999 24.845280308609958 2000 25.259080106799537 2001 25.656927696882896 2002 27.337673821807133 2003 29.135963498510154 2004 31.525191492805284 2005 32.20298084289173 2006 33.66467403698834 2007 34.338071951958945 2008 32.864990241175754 2009 33.35398867931771 2010 34.66483462777199 2011 33.33337023240281 2012 33.39600859275635 2013 32.67433152575175 2014 32.05594087191896 2015 31.169527840507364 2016 30.224896867303762 2017 30.603873724177003 2018 30.194184491688933 2019 29.04432301463069 2020 28.59401297933723 2021 29.651549045049332