Year Percent of GDP 1985 21.103 1986 21.771 1987 22.869 1988 22.586 1989 22.253 1990 18.751 1991 19.599 1992 19.702 1993 23.79 1994 20.911 1995 21.098 1996 20.395 1997 20.039 1998 23.226 1999 25.13 2000 22.067 2001 21.184 2002 22.32 2003 21.578 2004 22.244 2005 21.538 2006 21.273 2007 21.77 2008 23.9 2009 23.397 2010 22.964 2011 23.493 2012 22.48 2013 22.834 2014 22.883 2015 23.35 2016 23.525 2017 22.901 2018 23.577 2019 23.528 2020 23.509 2021 23.618 2022 23.605 2023 23.599 2024 23.574