Year % of GNI 1989 1.8086977367274035 1993 0.4428008408383924 1994 0.3785982653920897 1995 0.41364139014918183 1996 0.38526126941286337 1997 0.3450154444082212 1998 0.10392032790226557 1999 0.15389048531197796 2000 0.38500666501293745 2001 0.407721757448638 2002 0.31738141594110264 2003 0.30553923681572065 2004 0.4233116876422002 2005 0.38667480712487534 2006 0.5306548300558963 2007 0.4657720712134187 2008 0.5989975292584678 2009 0.361194117562739 2010 0.7299214957570925 2011 0.9882273495934052 2012 0.5242341252871896 2013 0.4197008076134443 2014 0.3366896552288576 2015 0.23804744810193001 2016 0.17983675298901772 2017 0.24179918654794508 2018 0.305091836332799 2019 0.2393413059534713 2020 0.15932774785059264 2021 0.35322330073528946