Year % of GNI 1990 1.92951215449482 1991 1.81232125823896 1992 1.73556642229752 1993 1.65767895036443 1994 1.60543366240853 1995 1.57753729425556 1996 1.55631112868183 1997 1.54846941916891 1998 1.52224018965337 1999 1.51436827861289 2000 1.52269023638526 2001 1.48976602940496 2002 1.457833817672 2003 1.42973249540016 2004 1.37785486922495 2005 1.31252133953647 2006 1.25290337144003 2007 1.22102495921959 2008 1.1112908602931 2009 1.07315149068691 2010 1.02545103828969 2011 0.944643412176471 2012 0.912708968456527 2013 0.864455919391622 2014 0.907219568581224 2015 0.914439361495818 2016 0.924131667345327 2017 0.870710064079311 2018 0.798732194916911 2019 0.746401938425166 2020 0.694038296113825 2021 0.675488276720328