Year Percent 2009-01-01 0.084386000000000000 2010-01-01 0.046468000000000000 2011-01-01 0.029863999999999998 2012-01-01 0.369095000000000000 2013-01-01 1.367560000000000000 2014-01-01 4.388740000000000000 2015-01-01 7.495340000000000000 2016-01-01 9.959620000000000000