Year % 2005 0.7528059 2007 0.9401826 2008 0.9452671 2009 0.8097568 2011 1.628643 2012 3.415033 2013 3.345771 2014 0 2015 2.832351 2016 2.555029 2017 3.922132 2018 3.425586 2019 3.65396 2020 3.668522 2021 3.565666