Year % 2005 0.6432556 2007 0.305021 2008 0.2452036 2009 0.1803117 2011 0.3324041 2012 0.6701043 2013 0.6757972 2014 0 2015 0.6072358 2016 0.5588269 2017 0.9615241 2018 0.8617048 2019 0.9255449 2020 0.9222868 2021 1.014434