Year % of GNI 1990 0.63890137680969 1991 0.718677248442003 1992 0.794058253777812 1993 0.865778435198222 1994 1.07598959870676 1995 1.16381440362666 1996 1.25262105696178 1997 1.21099788411475 1998 1.30140245331875 1999 1.34869425794142 2000 1.33003245871892 2001 1.52256594018092 2002 1.62345585410934 2003 1.79833435168896 2004 1.98228580192163 2005 1.74371047277889 2006 1.88207748850435 2007 1.83870962673524 2008 1.71089275955111 2009 1.55869993788521 2010 1.54707235134248 2011 1.56712955234736 2012 1.66456158771776 2013 1.76139060991096 2014 1.75314630343295 2015 1.76625536550817 2016 1.68379321119496 2017 1.59513636967216 2018 1.77576962615653 2019 1.80397784979076 2020 1.7410874057085 2021 1.74180663797586