Year % of GNI 1998 1.4279590718677093 1999 2.068519024325446 2000 9.83367921342008 2001 17.27581519352066 2002 14.272168497352098 2003 15.385082411243348 2004 12.832380950744472 2005 10.308513919576448 2006 17.0939579207232 2007 14.674892688177021 2008 19.5069752793442 2009 12.49622562330566 2010 9.44609386657345 2011 12.21579128742432 2012 11.42041708202153 2013 10.20264943164624 2014 7.1660970165002 2015 4.7590524092482 2016 3.9748906997361004 2017 5.85486421893807 2018 10.88370109053292 2019 7.05832164297769 2020 6.32694592227649 2021 13.98101947566185