Year % of GNI 2000 1.74795344441394 2001 1.64333347493889 2002 1.37761289607705 2003 1.62541771566116 2004 1.31717064177908 2005 1.029531745094 2006 0.603814475582656 2007 0.405575457477768 2008 0.246774100329526 2009 0.326885056665157 2010 0.281901095476329 2011 0.244824206232096 2012 0.291784382750342 2013 0.364791410510119 2014 0.465798608535662 2015 0.616323731590577 2016 0.790277489262642 2017 0.771482293842189 2018 0.764612486804227 2019 0.674381673331829 2020 0.675649849432876 2021 1.47759674244551