Year % of GNI 1993 29.443914376141038 1994 29.922156331013433 1995 31.52194354058646 1996 30.81418187114332 1997 28.348539664889277 1998 30.374637453569232 1999 28.930616287134832 2000 29.310302354533164 2001 29.529867050028162 2002 27.803783724238944 2003 26.24443694965144 2004 27.204014854742816 2005 28.07909448841967 2006 28.11619282631029 2007 29.745068181008264 2008 28.865999074259165 2009 25.009751096967804 2010 24.490066259325793 2011 24.432421255208137 2012 25.674386794340176 2013 25.74604233250114 2014 27.175952199769846 2015 29.08881543109159 2016 28.255572150074546 2017 28.912761734452452 2018 28.51280445176257 2019 28.687140920613967 2020 28.86371075807362 2021 29.824433160854046 2022 29.452643703601797 2023 30.30157251580605