Year % of GNI 1990 9.22757991017961 1991 5.80356063495589 1992 3.19121444933551 1993 5.72656119079297 1994 7.67614847097948 1995 6.61550480261873 1996 7.78536471906968 1997 8.27442399664031 1998 7.71916846677055 1999 6.74698130105653 2000 6.427435491949 2001 6.07145924064352 2002 7.24626760065439 2003 7.09812062007439 2004 7.5764683492966 2005 6.5062950214329 2006 6.7319486395351 2007 5.88478421802945 2008 6.32460524027728 2009 9.53919106775543 2010 7.47109483277274 2011 8.76095798549521 2012 10.6129176205079 2013 9.7761713039338 2014 8.31097137355106 2015 7.2869216375851 2016 5.27620441000865 2017 6.45064440401056 2018 6.0947064130238 2019 6.29474930574122 2020 7.1579707777786 2021 6.41777179782771