Year Percent of GDP 1992 16.322 1993 -1.5 1994 13.157 1995 16.839 1996 20.108 1997 25.63 1998 21.606 1999 19.894 2000 20.151 2001 22.113 2002 25.826 2003 28.004 2004 27.445 2005 27.829 2006 29.739 2007 29.737 2008 31.447 2009 25.13 2010 21.425 2011 20.671 2012 19.176 2013 19.421 2014 18.768 2015 20.006 2016 20.764 2017 20.928 2018 20.628 2019 20.566 2020 20.519 2021 20.69 2022 20.534 2023 20.563 2024 21.202