Year Percent of GDP 1989 17.08 1990 18.122 1991 17.226 1992 18.402 1993 16.378 1994 18.531 1995 20.196 1996 18.151 1997 17.349 1998 14.884 1999 14.686 2000 21.377 2001 21.113 2002 20.887 2003 18.704 2004 18.258 2005 19.323 2006 17.776 2007 21.608 2008 19.885 2009 23.229 2010 19.238 2011 20.128 2012 19.456 2013 20.355 2014 19.44 2015 24.923 2016 21.259 2017 24.371 2018 23.279 2019 21.959 2020 21.204 2021 20.897 2022 20.592 2023 20.208 2024 20.103