Year % of GNI 1990 1.3492809623024993 1991 1.6576830162492564 1992 1.5846369864818317 1993 1.5204149449514497 1994 1.5051118818913236 1995 1.32543067185101 1996 1.1865199453012045 1997 1.1357131721825624 1998 1.0674694346403855 1999 1.01501419591179 2000 0.9166013854095882 2001 0.8779647008031968 2002 0.8095239991406357 2003 0.7645617520351995 2004 0.6991706164115995 2005 0.6617936386319291 2006 0.6172349779553367 2007 0.5754300686532587 2008 0.5493126365113725 2009 0.5602105029434047 2010 0.5439492248669 2011 0.5453920574224306 2012 0.5375351475249671 2013 0.5502865709513841 2014 0.538423142724234 2015 0.5665483348135582 2016 0.5286884136048187 2017 0.49255591864959225 2018 0.4953184364859538 2019 0.49026807408950174 2020 0.5297687494760622 2021 0.5035160086811308