Year % of GNI 1993 20.85069339647277 1994 17.330130155287403 1995 19.685820642689112 1996 20.617141343129145 1997 20.01959473819218 1998 22.353526823110645 1999 21.758581703501875 2000 24.702588136548098 2001 24.24663368376597 2002 23.21084348209207 2003 23.30688488223431 2004 23.591322119810183 2005 25.444675557273108 2006 26.048390214099594 2007 26.404200452240705 2008 24.734923965786034 2009 24.50226621240687 2010 24.68833224916467 2011 28.33135030191548 2012 28.640186823712888 2013 28.210204283087307 2014 28.655192579046464 2015 27.459993408739663 2016 27.033428219115084 2017 29.467471365893925 2018 29.525873310682112 2019 29.492800881103395 2020 28.405491706505952 2021 28.992412479813385 2022 26.9064401245121 2023 23.99456594226248