Year % of GNI 1990 11.2394642058412 1991 11.0647019712168 1992 10.4701876291732 1993 9.74151182489661 1994 11.3187538137791 1995 11.1300866546161 1996 12.3297121371166 1997 13.7419766512822 1998 15.4313062930756 1999 16.1311954855518 2000 17.2059669169354 2001 17.7135768075769 2002 19.7174749186874 2003 19.7818568014308 2004 21.0009798480395 2005 21.7779254042157 2006 23.4486820311959 2007 24.6964506550294 2008 25.5751174433231 2009 26.9282042408682 2010 26.7701389867269 2011 26.3164127660765 2012 28.4676830000802 2013 28.1221828710059 2014 26.7001355213285 2015 25.8387641636232 2016 27.1709407652772 2017 25.3735927428659 2018 25.3726689721038 2019 33.2041713483012 2020 33.856065757834 2021 32.1835706072365