Year % of GNI 1996 14.3361353423869 1997 13.4970703077305 1998 11.5922244721164 1999 9.68772582323418 2000 10.3283785255212 2001 8.89898506138632 2002 7.45529174010997 2003 7.8920079576102 2004 8.68212828841454 2005 8.65281574002054 2006 8.42267153966669 2007 8.60827178660646 2008 5.93765718249204 2009 1.74628101265494 2010 3.89147161216968 2011 3.19741932753159 2012 3.01645406710488 2013 3.3046099774158 2014 3.52808772150201 2015 6.12312195533516 2016 6.88294130913772 2017 7.39289032246066 2018 6.89620560026889 2019 6.70702596546972 2020 4.81173284014487 2021 3.62518603701698