Year % of GDP 2004 158.68633982496948 2005 163.23388976173902 2006 171.23575919466737 2007 171.86580393889076 2008 168.9584130898434 2009 181.10718124952297 2010 177.94976344970362 2011 156.0231486731087 2012 144.90086614210222 2013 158.2986988270028 2014 150.7628070420438 2015 151.3113963694376 2016 150.35172442883987 2017 154.40485224379054 2018 157.9749016719928 2019 194.72017864908514 2020 152.3700253355694 2021 146.00610212556805 2022 149.20060421558844