Year % of GDP 1994 25.581255366346433 1995 23.8998548220445 1996 19.99509715177865 1997 19.4720343248006 1998 19.23301668193168 1999 19.710140821348205 2000 20.435823629058792 2001 21.430926775049656 2002 21.041091392355273 2003 20.85323929394576 2004 23.24164127159279 2005 27.117967613928794 2006 29.42251336569326 2007 30.853132288619495 2008 32.82833637790571 2009 25.61644463196295 2010 27.826169473274554 2011 29.628960813131556 2012 28.568314501242437 2013 26.790027361548756 2014 25.737936840089475 2015 20.364480978994198 2016 18.095478537183855 2017 19.535099793044974 2018 21.074136653632937 2019 20.390069417512795 2020 17.859841464535485 2021 20.533784048190142 2022 22.724653961690418 2023 21.079897307872862