Year Percent of GDP 1998 37.027 1999 39.306 2000 36.219 2001 34.353 2002 34.263 2003 32.955 2004 33.478 2005 34.509 2006 33.868 2007 33.099 2008 36.616 2009 42.789 2010 43.024 2011 38.828 2012 37.178 2013 37.267 2014 37.81 2015 37.78 2016 36.607 2017 36.423 2018 37.59 2019 36.717 2020 36.333 2021 35.35 2022 35.248 2023 35.157 2024 34.935