Year Percent of GDP 1992 18.206 1993 16.037 1994 16.606 1995 12.64 1996 10.621 1997 13.953 1998 13.907 1999 21.253 2000 20.009 2001 20.662 2002 21.68 2003 22.383 2004 20.744 2005 23.296 2006 18.341 2007 20.774 2008 22.742 2009 29.757 2010 21.37 2011 22.016 2012 22.547 2013 21.562 2014 20.934 2015 21.762 2016 22.335 2017 22.977 2018 23.077 2019 23.368 2020 23.45 2021 23.416 2022 23.641 2023 23.967 2024 24.292