Year % of GDP 2001 10.410752027865525 2002 10.890672379901154 2003 10.627178138510537 2004 10.163067126058351 2005 9.007664638404266 2006 9.068806293932173 2007 9.764779018242661 2008 9.477674520785131 2009 10.491622999738635 2010 11.631893027032266 2011 12.331907437855701 2012 12.865729292719505 2013 13.406960343823094 2014 13.279576863664511 2015 14.134869068550904 2016 13.051402225734563 2017 12.747518713729109 2018 11.818122211028316 2019 11.929655343523555 2020 14.147049801915076 2021 15.266176763454936 2022 13.874745541464929