2009-01-10   5.670
2009-10-09   5.160
2009-11-07   5.880
2009-12-06   5.540
2010-02-11   5.110
2010-09-30   6.590
2010-12-08   6.860
2011-08-05   4.900
2012-01-15   5.210
2013-01-03   6.730
2013-01-05   6.410
2014-04-21   6.670
2014-08-22   6.640
2015-01-02   7.360
2016-09-25   5.990
2017-02-13   5.830