Year % of GDP 2003 73.08537563944026 2004 73.03584676824251 2005 69.5749978282241 2006 72.90621803327106 2007 74.11942291373262 2008 72.19493756991592 2009 77.92645004021082 2010 77.69400618712137 2011 75.06330810537375 2012 75.47702859759612 2013 75.57622370573775 2014 75.40509285158419 2015 72.37658429836051 2016 69.94394566720273 2017 69.49305649911099 2018 68.42670054235094 2019 71.26546818367746 2020 70.78799721707054 2021 73.16770125664469 2022 73.34672824536229