Year % of GDP 2001 34.838606651308815 2002 30.046081839260246 2003 37.8821509448921 2004 36.61213958502741 2005 42.3088127186088 2006 45.590205248727955 2007 39.42279633748934 2008 48.208797258226305 2009 37.05891808476177 2010 36.59517886360558 2011 34.71003265421352 2012 29.83831896833034 2013 20.88078793484329 2014 30.70917401262466 2015 16.679050227654646 2016 12.893679188228804 2017 16.362197155474913 2018 6.928216083902522 2019 6.635555027274371 2020 4.27887462216473 2021 11.210293019762656 2022 19.566713638626844