Year % of GNI 1993 4.073586615726367 1994 4.627012546599081 1995 3.9851841833398653 1996 3.320199334978132 1997 2.8403474715556385 1998 2.983750768393599 1999 2.75626818246105 2000 2.606552539091871 2001 3.0751681986288752 2002 3.925133358176533 2003 3.9074792950573056 2004 3.372491748823312 2005 3.648566537750165 2006 4.06130569894408 2007 3.0150859850216283 2008 3.007646109705618 2009 3.389078759962648 2010 2.9495173958523657 2011 2.781154252444528 2012 2.5979755700126694 2013 2.5382214427899905 2014 2.252518629080915 2015 2.484347830338287 2016 2.6205391942218386 2017 2.7772591467599876 2018 2.5754806696613475 2019 2.6141312216514767 2020 3.550721629188817 2021 2.869328688927291