Year Percent of GDP 2000 47.245 2001 49.377 2002 51.487 2003 46.877 2004 44.265 2005 43.685 2006 42.921 2007 41.403 2008 42.049 2009 42.082 2010 40.409 2011 39.745 2012 40.36 2013 40.309 2014 38.918 2015 37.681 2016 37.848 2017 38.76 2018 38.977 2019 39.001 2020 38.989 2021 38.989 2022 38.979 2023 38.979 2024 38.979