Year % of GDP 2008 14.041755439211737 2009 14.875495818931814 2010 13.772621614045185 2011 13.1195916331863 2012 13.252797317810073 2013 13.512169978222685 2014 13.471064835463029 2015 13.264168004394456 2016 13.055252944583737 2017 12.784844259128041 2018 13.127486220908246 2019 12.862696657621159 2020 13.3520694216819 2021 12.891531973045566 2022 12.781394932645751 2023 12.769392800665697