Year % of GNI 1990 1.28199252870769 1991 1.20112778923332 1992 1.15297404077688 1993 1.08440837836047 1994 1.00160535598313 1995 0.94012194840734 1996 0.881248903350318 1997 0.838256361990056 1998 0.799077345555179 1999 0.810411325329518 2000 0.840660341291676 2001 0.822128753846243 2002 0.810416873455262 2003 0.757803500260079 2004 0.726598289225533 2005 0.738491024713858 2006 0.736481568262287 2007 0.735136964759468 2008 0.75562504748661 2009 0.765019763697265 2010 0.76231070297095 2011 0.783453370850363 2012 0.761372735475103 2013 0.726968091237908 2014 0.716819866919462 2015 0.699032425893218 2016 0.672342738669816 2017 0.62173923290195 2018 0.60296888322481 2019 0.596155168505288 2020 0.684627063699178 2021 0.676303030532851