2009-01-10   19.860
2009-10-09   17.780
2009-11-07   18.760
2009-12-06   19.200
2010-02-11   16.330
2010-03-23   18.240
2010-09-30   21.030
2010-12-08   20.760
2011-08-05   15.160
2012-01-15   15.530
2013-01-03   22.070
2013-01-05   20.960
2013-11-29   21.140
2014-04-21   20.500
2014-08-22   16.280
2015-01-02   16.050
2015-11-30   19.270
2016-09-25   12.070
2017-02-13   16.560