Year Percent of GDP 1995 52.929 1996 41.773 1997 41.954 1998 42.08 1999 41.363 2000 40.965 2001 43.204 2002 44.813 2003 49.345 2004 42.555 2005 42.273 2006 41.357 2007 40.374 2008 40.637 2009 44.2 2010 43.514 2011 43.035 2012 44.48 2013 42.603 2014 42.434 2015 41.699 2016 39.483 2017 38.953 2018 40.593 2019 41.1 2020 41.285 2021 41.502 2022 41.544 2023 41.523 2024 41.523