Year % of GDP 1995 36.052915449931916 1996 34.939889864103144 1997 31.34048958875948 1998 25.55734624511362 1999 23.68526987497228 2000 22.59073364494486 2001 19.99858471400031 2002 20.39170242135969 2003 19.924926788806317 2004 20.401528264180484 2005 22.482775892130174 2006 25.784021885327366 2007 29.66172026166405 2008 32.232349878701875 2009 34.30479241835821 2010 37.83538943878802 2011 41.30106206258106 2012 43.477546098191006 2013 45.0702781150895 2014 46.17227821211238 2015 45.22111705137387 2016 44.430671027622175 2017 44.43699145982204 2018 44.86033217415066 2019 46.67682185587696 2020 50.061024116332504 2021 47.91400895979577 2022 47.49341439867102 2023 47.774851169119025