Year % of GDP 2006 2.9804274645434794 2007 2.9145877915966887 2008 3.589771332093726 2009 3.6486336819287737 2010 2.690608728675508 2011 2.3454399471024416 2012 2.3688577016842944 2013 2.624146700575559 2014 2.21690522571356 2015 2.1525909564953705 2016 2.077275439191131 2017 1.5617239564414858 2018 1.6288740569818387 2019 1.7331666290048426 2020 1.9821320369131097 2021 1.7424478455442272 2022 1.5131162539360004 2023 0.9199270949627716