Year Percent of GDP 1990 28.818 1991 23.47 1992 23.339 1993 24.594 1994 24.201 1995 23.129 1996 22.551 1997 21.846 1998 22.383 1999 21.983 2000 21.848 2001 22.146 2002 22.633 2003 21.848 2004 21.944 2005 21.451 2006 21.522 2007 21.876 2008 24.181 2009 23.13 2010 24.694 2011 25.94 2012 24.631 2013 24.999 2014 25.933 2015 23.866 2016 22.647 2017 24.432 2018 26.116 2019 28.046 2020 28.636 2021 28.501 2022 28.385 2023 28.282 2024 28.191