Year Percent of GDP 1980 23.117 1981 20.317 1982 19.252 1983 19.978 1984 20.173 1985 20.636 1986 22.214 1987 22.28 1988 23.541 1989 24.22 1990 23.784 1991 22.926 1992 22.871 1993 21.038 1994 21.251 1995 21.728 1996 22.561 1997 22.843 1998 22.944 1999 23.217 2000 22.57 2001 22.718 2002 21.009 2003 20.488 2004 20.321 2005 20.454 2006 21.024 2007 23.349 2008 22.331 2009 20.721 2010 20.222 2011 20.04 2012 18.725 2013 18.51 2014 17.913 2015 22.475 2016 20.488 2017 20.671 2018 21.14 2019 21.546 2020 21.98 2021 22.371 2022 22.746 2023 23.182 2024 23.588