Year Percent of GDP 1992 30.577 1993 55.291 1994 45.695 1995 45.088 1996 38.883 1997 42.178 1998 36.871 1999 35.847 2000 45.924 2001 38.629 2002 36.205 2003 49.823 2004 38.232 2005 35.289 2006 27.081 2007 24.282 2008 21.003 2009 15.909 2010 18.107 2011 17.802 2012 15.325 2013 15.281 2014 15.23 2015 14.83 2016 14.868 2017 14.739 2018 15.124 2019 14.897 2020 13.311 2021 13.114 2022 12.952 2023 12.814 2024 12.7