2008-04-28   6.110
2008-04-29   5.890
2008-06-13   6.120
2009-11-06   5.800
2010-04-01   5.880
2010-06-01   5.640
2010-09-30   5.890
2011-03-26   5.660
2011-10-09   5.640
2012-09-21   5.850
2014-03-20   5.710
2014-05-28   5.850
2014-07-22   6.000
2014-09-22   5.970
2015-06-25   5.860
2015-07-25   5.810
2015-08-24   6.000
2016-07-23   5.940