Year % of GNI 2002 19.02440075488663 2003 18.483712280740114 2004 12.937319852657145 2005 19.73340039724801 2006 30.303904991249723 2007 13.314310062975348 2008 17.657982768526512 2009 11.70633927329203 2010 9.53307916859867 2011 11.882388786635923 2012 8.998002681395509 2013 9.008587908910588 2014 13.080528971037662 2015 35.17766389269388 2016 27.950751645136 2017 26.622051212975915 2018 29.870319559303923 2019 31.420544318434494 2020 30.885096217953212 2021 33.58640444962286 2022 37.86934772965476