Year % of GDP 1994 35.9752872149702 1995 42.0289225062308 1996 47.757914502763384 1997 40.617549016230946 1998 39.220527653462426 1999 38.704282982224655 2000 38.316301105035116 2001 39.846305025411105 2002 39.709239190656646 2003 40.62801008555725 2004 37.99372194137549 2005 37.06143175875541 2006 36.79367813351212 2007 35.143426402180026 2008 35.94192775039263 2009 36.81631165612871 2010 36.91584028645368 2011 35.061188524247235 2012 35.26199837667471 2013 36.07573893061027 2014 35.26215134850331 2015 34.337984877153986 2016 35.03136458190001 2017 34.49677576187945 2018 33.37916751704439 2019 34.19408938287746 2020 40.940474112707 2021 37.43405355979663 2022 36.258316806502414