Year % of GDP 2005 21.956602653826774 2006 18.634501775360693 2007 17.396296296296295 2008 29.583565797453005 2009 42.50529586363715 2010 47.45119480438768 2011 46.27980075616635 2012 40.64928056836097 2015 38.431192587331104 2016 41.477885823070785 2017 32.291738861852316 2018 24.558274167887355 2019 18.75078166945646 2020 18.936911881169596 2021 14.90927062265035 2022 15.067205659423951