Year Percent of GDP 1992 37.41 1993 6.72 1994 20.025 1995 23.993 1996 15.953 1997 24.345 1998 27.309 1999 24.289 2000 26.853 2001 28.409 2002 23.354 2003 26.447 2004 28.604 2005 27.543 2006 37.483 2007 37.297 2008 38.522 2009 32.09 2010 32.453 2011 32.098 2012 32.242 2013 33.122 2014 31.829 2015 27.558 2016 25.618 2017 33.222 2018 33.18 2019 35.556 2020 36.61 2021 37.385 2022 37.412 2023 37.755 2024 38.26