Year Percent of GDP 1986 9.282 1987 13.537 1988 7.874 1989 8.089 1990 8.949 1991 8.998 1992 11.557 1993 11.253 1994 11.939 1995 14.552 1996 14.72 1997 15.02 1998 11.834 1999 16.984 2000 17.529 2001 18.735 2002 20.021 2003 22.069 2004 17.826 2005 20.235 2006 22.517 2007 21.197 2008 18.617 2009 21.36 2010 17.368 2011 22 2012 23.5 2013 23.5 2014 23.2 2015 22.4 2016 22.9 2017 22.2 2018 22 2019 22 2020 21.8 2021 21.7 2022 21.6 2023 21.5 2024 21.5