Year Percent of GDP 1980 26.513 1981 26.352 1982 23.235 1983 25.998 1984 25.017 1985 28.35 1986 26.002 1987 28.009 1988 32.687 1989 35.231 1990 41.539 1991 42.064 1992 39.701 1993 39.656 1994 40.908 1995 42.863 1996 42.533 1997 34.275 1998 20.071 1999 20.173 2000 22.283 2001 23.112 2002 22.744 2003 23.829 2004 25.681 2005 30.421 2006 27.012 2007 25.496 2008 28.226 2009 20.636 2010 25.357 2011 26.791 2012 28.024 2013 27.457 2014 23.919 2015 22.356 2016 20.94 2017 22.836 2018 25.014 2019 25.788 2020 26.173 2021 26.199 2022 26.689 2023 27.58 2024 28.534