Year % of GNI 2005 -0.594971260936967 2006 -0.831646882605643 2007 1.63928867602965 2008 0.720598155612258 2009 1.77392209030955 2010 4.71766623765684 2011 5.49808371687022 2012 7.09654290424687 2013 4.64021315917012 2014 4.28738734510762 2015 3.21749781089113 2016 5.19281902324482 2017 5.72042707586957 2018 8.22775133041431 2019 7.61499229626679