Year % of GDP 2008 36.0884257938788 2009 38.709896491869 2010 38.6898568093694 2011 38.4763346418186 2012 37.8965812042422 2013 36.6983135002796 2014 37.0118627742791 2015 37.2957521848477 2016 38.953865364003 2017 41.6607425829676 2018 44.460620500851 2019 46.6721823532646 2020 51.6243424179382 2021 50.7890550974276 2022 52.7823854236435 2023 55.4126052075294