Month Percent 2007-01-01 47.97 2007-02-01 50.09 2007-03-01 49.92 2007-04-01 50.80 2007-05-01 49.78 2007-06-01 49.01 2007-07-01 49.18 2007-08-01 49.94 2007-09-01 50.46 2007-10-01 53.71 2007-11-01 51.41 2007-12-01 49.24 2008-01-01 49.01 2008-02-01 52.41 2008-03-01 51.47 2008-04-01 51.79 2008-05-01 51.99 2008-06-01 48.85 2008-07-01 51.97 2008-08-01 49.53 2008-09-01 50.73 2008-10-01 50.67 2008-11-01 47.66 2008-12-01 50.22 2009-01-01 50.55 2009-02-01 52.00 2009-03-01 52.60 2009-04-01 54.64 2009-05-01 54.28 2009-06-01 53.95 2009-07-01 54.85 2009-08-01 53.07 2009-09-01 54.07 2009-10-01 57.24 2009-11-01 56.04 2009-12-01 55.19 2010-01-01 54.63 2010-02-01 55.83 2010-03-01 54.49 2010-04-01 57.27 2010-05-01 55.35 2010-06-01 55.76 2010-07-01 55.91 2010-08-01 55.44 2010-09-01 56.99 2010-10-01 57.48 2010-11-01 57.61 2010-12-01 55.45 2011-01-01 55.77 2011-02-01 55.68 2011-03-01 55.57 2011-04-01 56.07 2011-05-01 57.01 2011-06-01 55.91 2011-07-01 56.53 2011-08-01 55.95 2011-09-01 57.50 2011-10-01 60.32 2011-11-01 59.07 2011-12-01 56.79 2012-01-01 57.43 2012-02-01 58.35 2012-03-01 58.00 2012-04-01 58.67 2012-05-01 59.05 2012-06-01 59.71 2012-07-01 57.79 2012-08-01 57.51 2012-09-01 57.18 2012-10-01 59.22 2012-11-01 57.61 2012-12-01 58.06 2013-01-01 56.76 2013-02-01 56.93 2013-03-01 56.39 2013-04-01 58.03 2013-05-01 59.04 2013-06-01 58.28 2013-07-01 58.48 2013-08-01 58.93 2013-09-01 57.50 2013-10-01 60.03 2013-11-01 58.03 2013-12-01 57.41 2014-01-01 56.88 2014-02-01 56.90 2014-03-01 56.69 2014-04-01 58.10 2014-05-01 57.50 2014-06-01 58.54 2014-07-01 57.58 2014-08-01 58.55 2014-09-01 58.51 2014-10-01 60.36 2014-11-01 59.01 2014-12-01 56.96 2015-01-01 56.75 2015-02-01 56.87 2015-03-01 57.68 2015-04-01 59.55 2015-05-01 58.74 2015-06-01 58.86 2015-07-01 57.47 2015-08-01 58.97 2015-09-01 59.42 2015-10-01 61.17 2015-11-01 59.53 2015-12-01 58.11 2016-01-01 58.32 2016-02-01 58.03 2016-03-01 57.26 2016-04-01 59.06 2016-05-01 58.19 2016-06-01 58.74 2016-07-01 57.28 2016-08-01 57.75 2016-09-01 58.19 2016-10-01 60.42 2016-11-01 58.88 2016-12-01 57.63 2017-01-01 56.56 2017-02-01 57.86 2017-03-01 57.24 2017-04-01 59.10 2017-05-01 57.84 2017-06-01 59.63 2017-07-01 57.37 2017-08-01 58.15 2017-09-01 58.19 2017-10-01 59.56 2017-11-01 57.78 2017-12-01 57.76 2018-01-01 56.43 2018-02-01 55.98 2018-03-01 56.74 2018-04-01 58.80 2018-05-01 57.41 2018-06-01 57.65 2018-07-01 56.77