Year % of GNI 1993 12.1101009265536 1994 6.81457961593785 1995 6.27800971716014 1996 5.38604970335078 1997 7.92258152062159 1998 8.07000519246531 1999 7.74237528551664 2000 10.7313945099186 2001 8.19946969810214 2002 7.1166164235362 2003 9.2837992685003 2004 13.0440394214508 2005 14.3553010851828 2006 15.9776342356638 2007 15.5379364063285 2008 16.8965978094247 2009 12.7868027252686 2010 12.9079486648038 2011 18.6010220611146 2012 17.1665621343692 2013 14.2474103977638 2014 13.4660988216108 2015 14.977981131653 2016 12.47584159001 2017 13.7529710600677 2018 14.7414897648454 2019 13.0259331539612 2020 11.8091628739064 2021 13.5064035421075