Year % of GDP 1994 41.8827443168638 1995 45.06372044358549 1996 45.540503172817346 1997 40.2263909226454 1998 42.77491445023074 1999 41.32366798415642 2000 41.42829048388699 2001 39.3116905641102 2002 46.26909504147355 2003 46.999648292723904 2004 49.02312712200084 2005 51.4456257058499 2006 52.52571739161155 2007 55.54949378550162 2008 60.210353745150165 2009 53.27073202870462 2010 56.73696788404534 2011 54.828303243041454 2012 52.179176327824955 2013 52.72439268589092 2014 51.606570320952486 2015 45.885366871012614 2016 46.34003471085647 2017 50.87033513583928 2018 53.649015202063936 2019 51.241568214576105 2020 48.31388515803521 2021 53.77131948338814 2022 52.87422997006066 2023 46.91733887806545