2009-01-10   20.630
2009-10-09   17.810
2009-11-07   20.660
2009-12-06   20.040
2010-02-11   19.500
2010-09-30   25.150
2010-12-08   24.950
2011-08-05   18.020
2012-01-15   16.360
2013-01-03   23.870
2013-01-05   23.840
2014-04-21   23.700
2014-08-22   23.340
2015-01-02   25.880
2016-09-25   22.800
2017-02-13   19.870