Year Percent of GDP 1980 35.318 1981 28.097 1982 22.165 1983 26.711 1984 23.121 1985 25.977 1986 25.128 1987 23.548 1988 23.924 1989 24.274 1990 20.75 1991 20.167 1992 18.228 1993 17.23 1994 17.731 1995 17.563 1996 16.919 1997 16.26 1998 16.272 1999 16.537 2000 16.239 2001 16.019 2002 17.18 2003 16.28 2004 15.701 2005 15.186 2006 15.706 2007 15.602 2008 17.613 2009 17.977 2010 18.012 2011 17.503 2012 14.835 2013 15.377 2014 15.429 2015 16.323 2016 16.381 2017 16.432 2018 14.582 2019 14.43 2020 14.086 2021 14.053 2022 14.21 2023 14.363 2024 14.528