Year % of GDP 1989 21.689643224745755 1990 18.29194225341629 1991 17.479801209965736 1992 18.647607375191395 1993 19.88786872734874 1994 20.913932250604795 1995 19.216213123397004 1996 18.81276653928174 1997 20.012454374175807 1998 20.389146876383066 1999 19.067973071160573 2000 19.1783300395703 2001 18.680996791965228 2002 18.581494680953586 2003 18.31884163217531 2004 18.845605582512974 2005 19.092753717608126 2006 19.715375215070292 2007 20.655231996696546 2008 21.419033270648345 2009 20.599974635079608 2010 20.79276575563051 2011 21.126023359115965 2012 21.394177366567195 2013 21.34958510567888 2014 20.852592359190268 2015 20.29339271837062 2016 19.044011531939542 2017 18.441986513608988 2018 18.937217755442056 2019 18.760655265988127 2020 18.234147821435474 2021 19.851644804805783 2022 20.25121410259773 2023 20.301346334770614