Year Percent of GDP 1995 39.659 1996 38.784 1997 39.358 1998 40.164 1999 40.524 2000 40.803 2001 41.665 2002 41.202 2003 41.553 2004 41.747 2005 42.002 2006 41.859 2007 39.586 2008 40.688 2009 45.258 2010 46.046 2011 46.106 2012 44.712 2013 54.406 2014 46.974 2015 43.75 2016 40.991 2017 39.772 2018 39.351 2019 39.727 2020 40.106 2021 40.204 2022 40.41 2023 40.665 2024 40.828