Year % of GDP 1990 19.787931192845267 1991 19.66236622914998 1992 19.350722770357855 1993 19.151673165519547 1994 19.506037913333326 1995 18.948766713812475 1996 18.736421050622315 1997 18.778564598743884 1998 18.438814722179725 1999 18.195668219881135 2000 17.64133398996757 2001 18.366733327003793 2002 18.75788225677059 2003 18.565117666115537 2004 18.459105945681976 2005 18.71843398399014 2006 19.077120733057544 2007 19.26382086474408 2008 19.34810897126766 2009 17.899150428849325 2010 17.89632703862345 2011 18.194488080468478 2012 17.731370796359176 2013 17.80054076610113 2014 17.549525308025828 2015 17.11865815677192 2016 17.332213214522174 2017 17.491019945269333 2018 17.666749930286826 2019 17.923539326233747 2020 17.787315795239795 2021 19.122659629862408 2022 18.404965895969305 2023 18.106468480009326