Year Percent of GDP 1995 32.863 1996 29.889 1997 32.062 1998 31.306 1999 25.312 2000 25.395 2001 24.299 2002 24.63 2003 28.307 2004 29.496 2005 32.129 2006 33.227 2007 35.711 2008 33.851 2009 32.426 2010 31.918 2011 30.513 2012 31.737 2013 30.877 2014 31.807 2015 29.962 2016 28.571 2017 29.841 2018 30.25 2019 30.041 2020 29.719 2021 29.484 2022 29.442 2023 29.285 2024 29.108