Year % of GNI 1990 8.65721822352652 1991 9.06648681499598 1992 13.8323366999517 1993 15.7957944577554 1994 18.1366745073848 1995 15.6142508093516 1996 10.9471866892777 1997 11.7570911272906 1998 15.4231290473766 1999 12.8296984966936 2000 11.7498556151062 2001 13.9756751451815 2002 11.1351515851175 2003 10.0194376920838 2004 10.1131907647133 2005 11.5513805479388 2006 11.4713336861207 2007 7.06840116172694 2008 4.80821700009746 2009 5.3677554165883 2010 6.66665331536121 2011 6.31957659097127 2012 5.32605984737271 2013 2.44355979132955 2014 3.81000962595657 2015 4.40004442328325 2016 5.33936790710377 2017 6.22338674772609 2018 5.81954179608314 2019 8.19457553756533 2020 9.00458414705188 2021 5.83915618193823