Year Percent of GDP 1990 20.264 1991 22.364 1992 30.391 1993 27.961 1994 22.551 1995 25.743 1996 28.449 1997 21.856 1998 23.208 1999 23.597 2000 24.646 2001 25.402 2002 24.069 2003 36.468 2004 40.804 2005 33.142 2006 36.474 2007 38.965 2008 41.163 2009 37.988 2010 40.844 2011 42.187 2012 37.544 2013 33.162 2014 31.778 2015 27.177 2016 21.164 2017 21.803 2018 22.325 2019 22.699 2020 23.482 2021 24.314 2022 25.095 2023 26.913 2024 29.014