Year % of GNI 1989 2.26690465563697 1990 5.5658332379517 1991 3.20544116306879 1992 4.49512249699528 1993 3.4631655014917 1994 2.74795890548156 1995 2.65985433532488 1996 2.83203194952774 1997 2.3000166339457 1998 1.2556691841028 1999 2.8617612197823 2000 5.89375894427963 2001 4.55577255090389 2002 3.7373948718137 2003 3.92859036202983 2004 6.49659940037381 2005 6.93283149742063 2006 6.51515541698768 2007 4.76897902135852 2008 4.78005802379919 2009 2.29674569217329 2010 2.30590735584845 2011 2.99315365947475 2012 2.59312626850295 2013 1.89759224165418 2014 1.81559710006401 2015 0.955360688400479 2016 0.647751850214497 2017 0.709986950508226 2018 0.748404606639639 2019 0.524430209128803 2020 0.23723570962839 2021 0.474122019985545