Year Percent of GDP 1990 42.405 1991 38.886 1992 48.975 1993 49.599 1994 43.433 1995 37.923 1996 33.241 1997 35.108 1998 33.724 1999 33.042 2000 32.597 2001 29.44 2002 32.861 2003 36.305 2004 37.5 2005 36.83 2006 33.516 2007 37.324 2008 40.493 2009 43.552 2010 37.407 2011 35.501 2012 37.192 2013 37.665 2014 40.532 2015 58.914 2016 45.048 2017 38.343 2018 34.602 2019 31.007 2020 29.75 2021 27.984 2022 27.196 2023 26.653 2024 25.776