Year % of GDP 1994 8.612818555719578 1995 9.764827675771814 1996 15.018347315349795 1997 14.498061712633211 1998 16.83757194350492 1999 21.36118867542663 2000 23.450132253815408 2001 21.33830936427134 2002 20.611443892063654 2003 19.930646214418342 2004 23.091288904302687 2005 20.18963371628492 2006 19.11431140246859 2007 18.17608965978171 2008 18.871897440400314 2009 21.80627759275724 2010 21.98086704007282 2011 20.463718877420174 2012 20.087435073634634 2013 20.33188538193434 2014 20.40839686523853 2015 26.135062141848508 2016 26.144044456806853 2017 24.593519299335476 2018 23.17652056797429 2019 21.561829283329622 2020 17.06575709083743 2021 16.424728464850155 2022 27.360411835703513 2023 23.176711985119958