Year % of GDP 1995 19.681487236997413 1996 19.202631078241676 1997 18.946605550855665 1998 18.771382846778074 1999 19.40141561875183 2000 19.21061742029848 2001 19.189412230113906 2002 19.392963490974488 2003 19.94895248598288 2004 19.067880246536305 2005 18.974569268085297 2006 18.86174361748313 2007 18.121672038293376 2008 18.592101551588687 2009 19.38172823016476 2010 19.207075055255356 2011 18.275398538043945 2012 18.05093816707621 2013 18.255228750493995 2014 18.20041432357179 2015 17.911944174935087 2016 18.0749205533036 2017 17.981458734050488 2018 18.145926638391067 2019 18.58661923816972 2020 20.04156376605448 2021 19.626984840118837 2022 18.767184606002886 2023 18.965488053658238