2008-03-31   27.260
2008-04-28   26.090
2009-04-21   23.790
2009-05-06   23.220
2010-04-01   24.570
2010-09-30   25.260
2011-03-26   21.320
2013-03-13   19.920
2014-03-17   23.820
2014-05-28   17.140
2014-09-22   24.210
2015-06-24   24.510
2015-07-24   21.830
2017-02-13   20.730
2017-05-20   22.100