2009-01-10   6.340
2009-10-09   6.180
2009-11-07   6.240
2009-12-06   6.510
2010-02-11   6.510
2010-09-30   6.580
2010-12-08   6.470
2011-08-05   6.780
2012-01-15   6.330
2013-01-03   6.410
2013-01-05   6.700
2014-04-21   6.820
2014-08-22   6.260
2015-01-02   6.340
2016-09-25   6.390
2017-02-13   6.510