Year Percent of GDP 2000 22.718 2001 19.567 2002 20.797 2003 22.18 2004 22.515 2005 22.983 2006 22.39 2007 22.805 2008 21.474 2009 21.264 2010 22.459 2011 23.474 2012 23.935 2013 23.495 2014 23.317 2015 24.172 2016 25.269 2017 25.339 2018 24.092 2019 25.664 2020 26.813 2021 24.812 2022 25.358 2023 25.784 2024 25.962