Year % of GDP 2000 6.407762473767588 2001 6.507905277130318 2002 6.358900859765085 2003 6.600848726170209 2004 6.702676876025008 2005 6.78946144994724 2006 6.859757371631826 2007 7.022559225647467 2008 7.0499612243214544 2009 7.602536339213104 2010 7.304451118165944 2011 7.207730969062647 2012 7.210131148583629 2013 7.352686781496816 2014 7.488890312723911 2015 7.846186780069182 2016 7.8701231239269775 2017 8.051986084177772 2018 7.897880357149238 2019 7.892297961476176 2020 8.511465925572562 2021 8.214073213656139