Year % of GDP 1990 26.180207483389673 1991 21.534552384409455 1992 36.198832349233726 1993 27.987402549436506 1994 26.965717031770453 1995 30.661183086747428 1996 34.32387576068916 1997 35.00809800745879 1998 30.823315147928675 1999 31.31185783943809 2000 26.932441071258552 2001 29.822627551933106 2002 29.697218455193518 2003 31.966791998232573 2004 34.88254240190479 2005 34.825328842903154 2006 36.912399427475464 2007 38.79432762395079 2008 39.0194700376745 2009 32.44922154010289 2010 38.15943885317347 2011 40.87420830230348 2012 40.7877139150902 2013 41.15427589075351 2014 41.900222522427164 2015 42.17167903830727 2016 43.47692724158122 2017 44.82183772874207 2018 44.928923008458504 2019 44.30286636160778 2020 41.18254879987027 2021 46.26212418944305 2022 49.954144067551084 2023 43.909486045357376