Year % of GDP 1991 19.23128863040687 1992 15.978770450786664 1993 11.878287075074862 1994 15.696837859191056 1995 19.334844021534476 1996 20.7515942299167 1997 21.503297900887613 1998 21.34541094498293 1999 18.709648019869274 2000 19.2514346029452 2001 19.773595558484523 2002 18.54371144149149 2003 15.785716872018815 2004 16.696465489355536 2005 16.573849532998413 2006 18.081168412212183 2007 16.764685743172222 2008 17.698163013484926 2009 19.779037952501433 2010 20.75141542214005 2011 20.935878313268677 2012 21.064895375217223 2013 24.483348045248576 2014 24.54018258062096 2015 25.33182251439078 2016 25.737862523356668 2017 24.71268090628836 2018 26.738493590195777 2019 27.446110047801415 2020 26.249323517310863 2021 26.5655067173919 2022 25.636322237634168 2023 26.31392716808623