Year % of GNI 2001 42.50730064472481 2002 45.70217359035268 2003 47.134005622217735 2004 46.89039727042576 2005 55.189851923204834 2006 58.59408589911165 2007 53.936859725879955 2008 62.39282601581073 2009 48.45748708945723 2010 60.59450027970869 2011 65.54680501008188 2012 64.45166399236882 2013 60.95489329906415 2014 59.76618246114198 2015 54.38207872305706 2016 52.56221014750903 2017 52.233766302730785 2018 52.87724826428383 2019 52.15520480204293 2020 49.419402965403144 2021 49.41922424454745 2022 51.52425457293925