Year % of GDP 2001 27.423852598087485 2002 22.297065779831073 2003 22.41918971685798 2004 20.57806593539442 2005 18.111060070362704 2006 17.070797437933233 2007 17.392487290004667 2008 15.76936697857386 2009 21.887517594508772 2010 12.630428174727435 2011 12.522146214985616 2012 16.3908696482781 2013 18.52412078586785 2014 16.0467664551474 2015 17.80109732729835 2016 19.07651053360041 2017 14.845165114201416 2018 15.816501106115318 2019 17.996762534561856 2020 12.970998359562946 2021 7.8337447086996175 2022 8.459450536805322