Year Percent of GDP 2000 9.063 2001 6.867 2002 8.302 2003 7.262 2004 10.179 2005 9.17 2006 10.66 2007 11.522 2008 10.744 2009 12.383 2010 11.006 2011 13.647 2012 16.205 2013 12.19 2014 14.692 2015 14.04 2016 13.376 2017 19.156 2018 14.763 2019 22.051 2020 19.8 2021 18.767 2022 18.653 2023 18.833 2024 17.808