Year % of GDP 2008 94.94049495151938 2009 95.37560647023452 2010 93.43268030930368 2011 87.49683926614784 2012 87.3992188063471 2013 86.15089684524698 2014 88.58916132012669 2015 85.07707303456228 2016 81.75720453827566 2017 79.236842039023 2018 79.81103559443191 2019 80.08455576196272 2020 84.898403656919 2021 82.99655372822518 2022 85.73635409449952 2023 83.9406438656805