2008-04-29   8.840
2008-06-13   7.930
2009-11-07   7.620
2010-04-01   8.720
2010-06-01   7.530
2010-09-30   9.200
2011-03-26   8.310
2011-10-09   8.350
2012-09-21   8.830
2014-03-20   8.580
2014-05-28   8.920
2014-07-22   9.150
2014-09-22   9.320
2015-06-25   8.840
2015-07-25   8.470
2016-07-23   8.420