Year % of GNI 1990 5.699832932905909 1991 6.426588397626272 1992 6.483541078992889 1993 8.340011434987796 1994 8.99897662268772 1995 6.93834395387836 1996 7.6119028948131335 1997 7.896651769748279 1998 7.450389008958759 1999 6.048141248093021 2000 6.1826369828625385 2001 6.01089162624202 2002 6.211543061516502 2003 5.731087830487715 2004 7.303179427847705 2005 6.89769062529246 2006 8.600151880444548 2007 9.265680422503934 2008 8.870019163269394 2009 6.538545225275802 2010 7.32786998031883 2011 5.75372662174852 2012 4.227853704289178 2013 3.5208214887165483 2014 2.2716089636627674 2015 4.160096835506602 2016 3.5530634637769247 2017 3.7721194529209945 2018 2.937756987429002 2019 3.5045499466033254 2020 4.8282927970487 2021 3.8784524041200865