Year % of GDP 1990 28.698686226322778 1991 25.282985387024 1992 25.756856442111562 1993 27.495568901166166 1994 31.79316580094565 1995 32.68289975926561 1996 33.779873626238995 1997 35.64200830735552 1998 27.644271061714377 1999 26.096843774819007 2000 30.093107190315944 2001 32.50119856285098 2002 32.0827341681099 2003 32.58933731179023 2004 34.79742037131949 2005 32.90040942631949 2006 34.46988477613832 2007 35.04652813393587 2008 36.561216277572115 2009 31.98581302122055 2010 32.66245346016709 2011 36.756196762210976 2012 36.02040094656906 2013 34.56724908631755 2014 33.540318762982366 2015 31.82673425289318 2016 31.847935002752337 2017 35.38887520400703 2018 37.73694772181841 2019 37.19748018867053 2020 35.780606235351634 2021 38.31902719277795 2022 43.46360281505988 2023 38.770867656879965