Year Percent of GDP 2000 9.375 2001 10.501 2002 9.438 2003 8.8 2004 8.904 2005 8.301 2006 5.939 2007 4.142 2008 7.896 2009 18.334 2010 28.48 2011 31.193 2012 29.43 2013 29.253 2014 29.598 2015 31.058 2016 31.001 2017 32.113 2018 30.378 2019 29.856 2020 28.652 2021 28.563 2022 27.309 2023 26.311 2024 25.287