Year % of GNI 1991 28.42346111562928 1992 54.823735827663654 1993 42.777359170321056 1994 42.46510499596645 1995 36.01359385733301 1996 22.51871883471343 1997 19.80279421817107 1998 19.18083422650155 1999 13.287034646322498 2000 15.814319436620817 2001 17.725187860230374 2002 41.464821100565835 2003 16.352704832674853 2004 16.02266481748949 2005 15.159374819361451 2006 18.499933594617506 2007 14.884813982110689 2008 13.954185547570999 2009 15.02601800202467 2010 17.58151470179469 2011 14.379410149053474 2012 12.470618815615971 2013 13.493405241422751 2014 11.84726849475981 2015 11.434639794882015 2016 12.961196859515594 2017 14.017013885365973 2018 12.379474816592635 2019 12.085798547759168 2020 18.326151417645196 2021 14.4225523794379 2022 15.06446340550002