2008-03-31   30.770
2008-04-29   30.170
2009-11-06   28.560
2010-02-11   28.450
2010-04-01   32.970
2010-05-30   32.660
2010-12-08   31.990
2012-01-16   24.210
2012-04-20   29.710
2013-01-03   27.700
2013-03-13   26.930
2013-06-16   29.900
2015-01-14   26.890
2015-11-30   22.000
2017-02-10   28.000