2009-01-10   18.190
2009-10-09   16.760
2009-11-07   16.750
2009-12-06   17.990
2010-02-11   17.630
2010-09-30   20.190
2010-12-08   20.870
2011-08-05   17.170
2012-01-15   15.270
2013-01-03   19.110
2013-01-05   17.860
2014-04-21   20.890
2014-08-22   20.700
2015-01-02   19.400
2016-09-25   15.820
2017-02-13   14.360