Year Percent 2009-01-01 9.20043 2010-01-01 6.66233 2011-01-01 7.69245 2012-01-01 10.34870 2013-01-01 10.48480 2014-01-01 10.48480 2015-01-01 10.48480 2016-01-01 5.72050