Year % of GNI 1993 11.8114647447062 1994 18.5218456200688 1995 20.7791762474068 1996 20.33439031159 1997 19.9204728358132 1998 20.6598163897047 1999 27.3635635664364 2000 26.2085580830339 2001 22.1352543803692 2002 19.230124983389 2003 16.5088108611833 2004 16.1813344913237 2005 15.6077957956846 2006 13.1936383207985 2007 12.2445886049493 2008 8.72432974591961 2009 7.63221023292818 2010 8.17462177072555 2011 7.39318033206359 2012 6.73513408797562 2013 6.34356421608116 2014 6.0704474868371 2015 7.57239984071133 2016 7.47675525038919 2017 7.52617854989775 2018 7.33017630053277 2019 6.8192920454348