2008-04-29   6.390
2008-06-13   7.040
2009-11-06   4.480
2010-04-01   5.850
2010-06-01   6.210
2010-09-30   5.560
2011-03-26   6.340
2012-09-21   5.790
2014-03-20   4.680
2014-05-28   6.900
2014-07-22   5.910
2014-09-22   6.000
2015-06-25   5.950
2015-07-25   6.320
2015-08-24   6.230
2016-07-23   6.310