Year % of GNI 2006 0.6010040314403674 2007 0.5163645490684979 2008 0.7039812566161999 2009 0.4144336357041322 2010 0.872516807170135 2011 1.2686316271349012 2012 1.279659883781283 2013 1.0513649497939819 2014 0.956035933028217 2015 0.5084766822528299 2016 0.388347211153512 2017 0.495790252173561 2018 0.584568883068158 2019 0.4742619681498593 2020 0.266130028945521 2021 0.637500290915707