2008-03-31   21.930
2008-04-28   23.910
2009-04-21   18.350
2009-05-06   17.130
2010-04-01   29.680
2010-09-30   33.660
2011-03-26   17.330
2013-03-13   25.140
2014-03-17   29.160
2014-09-22   26.590
2015-06-24   22.570
2015-07-24   23.050
2017-02-13   24.640
2017-05-20   20.610