Year % of GDP 1989 22.24370958695557 1990 18.696275774142908 1991 17.579954544020033 1992 18.366017838013484 1993 19.631620758309914 1994 20.76701544157385 1995 18.920812614320482 1996 18.487705920653635 1997 19.323414162653986 1998 19.628781478204857 1999 18.560710843142314 2000 18.875183105571427 2001 18.095564458861023 2002 18.125197784918033 2003 18.072174432400494 2004 18.59248716766511 2005 18.692313117288133 2006 19.338522765085646 2007 20.05442199956603 2008 20.89767633523562 2009 19.885120018227195 2010 20.659897880889307 2011 20.934059487606042 2012 20.909849372836273 2013 20.699389626078453 2014 20.19157154508648 2015 19.564031842279842 2016 18.33924213853918 2017 17.83106294832018 2018 18.308456498369605 2019 18.055966770599365 2020 17.698073603338596 2021 19.317563372075877 2022 19.65557095958798 2023 19.791109820434286