Year % of GDP 1986 10.500963695345023 1987 6.8361696315520835 1988 7.497989084378849 1989 8.390875801303139 1990 5.872158768706582 1991 5.603136473243932 1992 6.280803643422191 1993 5.311892338896789 1994 6.9362455887376395 1995 8.190832060155387 1996 10.227131237672241 1997 10.61692814438255 1998 8.214085831006733 1999 8.998819403833433 2000 10.155127753558752 2001 10.362223467399671 2002 10.581103393733283 2003 11.711251237157745 2004 12.796834763330745 2005 13.081159639613949 2006 13.90125640973911 2007 13.884188736551433 2008 13.942531840195716 2009 13.362738141427855 2010 17.45102825363064 2011 16.706167153693848 2012 14.018939608503441 2013 14.048354510344932 2014 15.596894118683254 2015 15.50103100593511 2016 18.02818772388306 2017 19.103048677882224 2018 18.48827680825373 2019 18.65338009717403 2020 18.694402036485318 2021 17.36445207397622 2022 16.212671266003937 2023 16.30304903357201