Year % of GDP 1994 28.272648344420386 1995 24.68937079031856 1996 22.027239025581625 1997 20.401448603703262 1998 19.999604562289626 1999 20.93220653116161 2000 23.12599791352212 2001 23.663757025353902 2002 24.728461356786756 2003 23.735346432540812 2004 27.487757045019052 2005 28.55112365278542 2006 28.523677883327863 2007 29.144471858313377 2008 30.641942719426822 2009 23.821651416973598 2010 27.040636682175766 2011 24.27865078373226 2012 20.181276109992183 2013 19.7796257606354 2014 20.645749711410843 2015 16.852749641282912 2016 15.791686771901459 2017 18.661707909764278 2018 19.69731582791542 2019 18.29458183706488 2020 17.351496918921892 2021 20.477693029099182 2022 21.72938944889906 2023 18.343850148157024