Year Percent of GDP 1991 15.908 1992 21.036 1993 20.274 1994 21.599 1995 24.062 1996 23.058 1997 22.943 1998 28.046 1999 30.619 2000 36.108 2001 37.036 2002 38.806 2003 38.264 2004 30.413 2005 26.276 2006 22.162 2007 19.11 2008 20.612 2009 20.521 2010 19.355 2011 20.707 2012 21.193 2013 20.386 2014 26.081 2015 40.057 2016 48.505 2017 52.248 2018 50.483 2019 52.183 2020 54.233 2021 55.821 2022 57.106 2023 58.434 2024 59.656