Year % of GNI 1995 13.40491000474719 1996 12.623287237906977 1997 15.211737428698132 1998 13.123875319557127 1999 10.76999782515714 2000 13.186919744399813 2001 14.567745898008525 2002 15.839596690791728 2003 15.647911503199607 2004 15.432621574534055 2005 17.15394027018448 2006 16.692067003340334 2007 17.69380175089184 2008 15.394075720802533 2009 14.401772614223953 2010 18.445212748850285 2011 18.856695735910307 2012 18.77153638831607 2013 21.70057317341683 2014 23.360016011453585 2015 19.531488188334666 2016 18.80455568137113 2017 20.477718063643305 2018 21.30034908933381 2019 22.087765292772843 2020 22.506043796289337 2021 22.360815104778947 2022 22.18933246493896 2023 21.55957892707821