Year % of GNI 1995 0.900101933978904 1996 1.05918889116429 1997 1.09048458548121 1998 1.19502322611062 1999 1.18890752012795 2000 1.22423452463743 2001 1.33324954063827 2002 1.44336199834581 2003 1.3774250936042 2004 1.69793624951998 2005 1.82207103777447 2006 1.89686450851999 2007 1.88572570823203 2008 1.84921766835929 2009 2.02837444223966 2010 2.03386595048329 2011 2.01056429366602 2012 2.08501427179284 2013 2.04539824395452 2014 2.22224000277691 2015 2.12860152583423 2016 2.5058565639283 2017 2.52915991369491 2018 2.57936017795844 2019 2.55782153296696 2020 2.57726238623379 2021 2.8293719364122