Year Percent of GDP 2000 42.21 2001 42.402 2002 35.547 2003 35.428 2004 34.393 2005 33.212 2006 31.355 2007 27.061 2008 26.507 2009 30.079 2010 34.676 2011 38.228 2012 41.001 2013 44.103 2014 46.988 2015 49.335 2016 51.465 2017 53.022 2018 56.71 2019 57.81 2020 59.793 2021 61.795 2022 63.536 2023 65.082 2024 66.465