Year % of GNI 1990 22.9089183426781 1991 19.6509663365423 1992 12.9852663051458 1993 13.8384645520772 1994 12.4197557881186 1995 11.4166319361445 1996 1.81057403374871 1997 13.1448385091077 1998 -1.77614663509799 1999 -3.27167177789809 2000 3.24254884207616 2001 5.1154896717235 2002 9.64150114164095 2003 9.48270065783938 2004 13.3337613181964 2005 15.8564392007563 2006 22.2503003957988 2007 20.2169967149074 2008 29.4507644196218 2009 19.1720685863852 2010 13.4105186822542 2011 14.6009258714934 2012 11.5650709944324 2013 17.0154689064946 2014 21.2332223175759 2015 24.292682268514 2016 25.5248554086816 2017 22.9693845543779 2018 33.9371003752673 2019 42.4630689388587 2020 40.2927908681295 2021 37.2728468096198