Year Percent of GDP 2000 19.971 2001 20.56 2002 15.654 2003 16.983 2004 13.261 2005 15.775 2006 14.955 2007 15.756 2008 14.953 2009 18.355 2010 22.313 2011 20.806 2012 21.218 2013 25.249 2014 24.1 2015 22.97 2016 20.463 2017 21.969 2018 20.897 2019 20.963 2020 21.05 2021 21 2022 21.001 2023 21.004 2024 21.005