Year Percent of GDP 2000 57.726 2001 50.905 2002 48.821 2003 47.844 2004 49.228 2005 40.287 2006 46.199 2007 49.8 2008 44.821 2009 42.639 2010 47.851 2011 43.845 2012 43.267 2013 40.092 2014 39.823 2015 34.263 2016 37.514 2017 34.933 2018 35.778 2019 40.502 2020 39.331 2021 38.856 2022 37.221 2023 37.072 2024 36.847