Year Percent of GDP 1994 48.286 1995 47.333 1996 43.047 1997 39.263 1998 33.648 1999 36.861 2000 42.143 2001 31.056 2002 36.426 2003 29.039 2004 32.429 2005 33.547 2006 33.344 2007 29.503 2008 30.25 2009 33.418 2010 39.159 2011 33.284 2012 34.686 2013 33.843 2014 30.487 2015 31.448 2016 29.641 2017 31.577 2018 30.941 2019 33.463 2020 31.059 2021 30.237 2022 30.141 2023 29.973 2024 30.025