Year Percent of GDP 1980 26.356 1981 13.22 1982 13.519 1983 15.305 1984 21.615 1985 15.012 1986 12.958 1987 13.822 1988 12.965 1989 12.579 1990 21.957 1991 19.921 1992 26.583 1993 24.918 1994 24.383 1995 23.788 1996 24.626 1997 23.954 1998 25.447 1999 24.821 2000 23.773 2001 22.318 2002 22.691 2003 22.857 2004 23.595 2005 25.859 2006 25.573 2007 26.431 2008 21.362 2009 27.964 2010 28.457 2011 26.294 2012 33.235 2013 29.83 2014 29.804 2015 28.844 2016 32.849 2017 33.806 2018 33.531 2019 34.92 2020 35.188 2021 35.399 2022 35.528 2023 35.718 2024 35.871