Year Percent of GDP 1980 11.152 1981 8.591 1982 8.344 1983 14.191 1984 16.616 1985 16.435 1986 17.868 1987 19.352 1988 22.878 1989 20.73 1990 25.522 1991 28.341 1992 26.814 1993 25.445 1994 25.557 1995 23.639 1996 23.745 1997 21.69 1998 18.757 1999 18.693 2000 16.793 2001 17.366 2002 15.83 2003 17.746 2004 20.72 2005 15.033 2006 17.435 2007 15.486 2008 6.106 2009 12.958 2010 13.418 2011 8.539 2012 10.987 2013 12.153 2014 14.117 2015 17.967 2016 20.539 2017 17.98 2018 16.65 2019 16.569 2020 16.382 2021 16.394 2022 16.481 2023 16.387 2024 16.267