Year Percent of GDP 2000 46.967 2001 51.488 2002 59.986 2003 54.312 2004 50.25 2005 47.967 2006 46.539 2007 44.175 2008 37.118 2009 40.4 2010 37.998 2011 34.471 2012 32.19 2013 30.505 2014 32.585 2015 35.64 2016 46.17 2017 51.628 2018 54.143 2019 56.181 2020 58.743 2021 60.861 2022 62.782 2023 64.176 2024 65.746