Year % of GDP 1990 20.706560205152115 1991 24.919416488951406 1992 22.89811251907384 1993 24.218367621956695 1994 23.256858515362854 1995 18.62702062912254 1996 15.999911307814571 1997 15.209445162960144 1998 11.187958922062165 1999 11.513666018459395 2000 16.00547638213448 2001 17.310205940980346 2002 18.821390771089796 2003 16.32253009989704 2004 15.809860107328385 2005 14.21925559582089 2006 16.991374042843567 2007 17.7991499854042 2008 21.811006694422904 2009 22.525164399932518 2010 21.81761614341801 2011 22.879893385983866 2012 21.834141482676173 2013 24.33374708733809 2014 24.712339151954225 2015 24.713472345906677 2016 22.13554840396337 2017 20.820558598824 2018 18.735866111271278 2019 19.421016659194237 2020 19.60682044258576 2021 19.08053025604282 2022 17.887475433618675 2023 18.678053329966808