Year % of GNI 1990 6.25993146872576 1991 4.12563546570765 1992 3.03268636621398 1993 3.97084282967319 1994 6.64479000917372 1995 8.3909144379611 1996 8.41181631622512 1997 9.16588257854853 1998 7.22942473368935 1999 8.83765063934301 2000 10.4943512648211 2001 8.98058446052236 2002 8.46130736062138 2003 8.22901051530269 2004 10.4377218714901 2005 10.5241891149439 2006 11.7411523676917 2007 11.3681692902437 2008 10.1266397602635 2009 4.47267751334087 2010 6.69736386968561 2011 8.43483318896238 2012 8.12692593072351 2013 8.29998869232896 2014 8.97970282715066 2015 5.42933414095474 2016 4.69516194144029 2017 6.1980899407001 2018 5.87364364901771 2019 6.03837023387838 2020 3.86104745752944 2021 7.61520074432484