Year % of GNI 1984 4.997561053424551 1985 3.410325331866181 1986 4.5601232148504245 1987 4.741678574365115 1988 -0.612814680045337 2000 8.893105600497293 2001 1.4534098733006309 2002 19.06477299707753 2003 11.191806147996093 2004 15.351679431091314 2005 20.743372681263395 2006 23.88387670939613 2007 19.832115570015947 2008 14.722309564152923 2009 17.105076470419743 2010 10.329637686692372 2011 19.740558408022217 2012 7.303994596155242 2013 6.042321078727401 2014 10.64130264916619 2015 11.247555203314846 2016 18.431168195248777