Year % of GDP 1995 0.41903400337692115 1996 0.3945233373280589 1997 0.3953642456037451 1998 0.4464680958704863 1999 0.4274949016870781 2000 0.3552198300821932 2001 0.4467289719626168 2002 0.5168248490077654 2003 0.45488953683974437 2004 0.40475660369818517 2005 0.3013580184120848 2006 0.2365157196423421 2007 0.21331712737027556 2008 0.1600209996012095 2009 0.26232776542651215 2010 0.4517289310728725 2011 0.43883578518330935 2012 0.3598743038396116 2013 0.355177602564807 2014 0.4506361594629929 2015 0.537729005863466 2016 0.5185920812610203 2017 0.5250920380054205 2018 0.44733871628933025 2019 0.3762032469695114 2020 0.51263418010055 2021 0.49495623393976734 2022 0.403984987663599