Year % of GDP 2005 21.53798299648015 2006 21.915242169605268 2007 21.45923036525897 2008 21.07610500273828 2009 21.296786017241473 2010 21.992450044413705 2011 21.919833923010593 2012 21.156002470263374 2013 21.36705462281653 2014 23.33071792967005 2015 23.27629647386534 2016 24.100897751417143 2017 25.466197514755656 2018 25.196020988453267 2019 25.642409546723062 2020 25.21820393511473 2021 25.15962032819051 2022 24.65398441875006