Year Percent of GDP 1992 27.968 1993 27.86 1994 26.285 1995 25.088 1996 28.594 1997 31.579 1998 29.067 1999 25.172 2000 27.013 2001 28.742 2002 29.825 2003 28.161 2004 26.145 2005 25.495 2006 27.129 2007 25.448 2008 24.494 2009 28.378 2010 27.545 2011 29.021 2012 28.195 2013 27.148 2014 31.501 2015 31.98 2016 29.485 2017 32.368 2018 34.767 2019 33.654 2020 33.401 2021 33.208 2022 33.1 2023 32.995 2024 33.041