Year Percent of GDP 2000 9 2001 8.537 2002 14.032 2003 18.29 2004 25.701 2005 23.992 2006 20.318 2007 18.915 2008 24.479 2009 28.79 2010 28.925 2011 28.889 2012 28.669 2013 27.787 2014 26.508 2015 26.999 2016 27.642 2017 27.535 2018 28.834 2019 32.01 2020 30.18 2021 29.124 2022 28.907 2023 28.281 2024 27.977