2009-01-10   5.620
2009-10-09   5.270
2009-11-07   5.730
2009-12-06   4.720
2010-02-11   6.010
2010-03-23   6.320
2010-09-30   6.090
2010-12-08   5.910
2011-08-05   5.580
2012-01-15   5.500
2013-01-03   5.590
2013-01-05   5.700
2014-04-21   6.050
2014-08-22   5.590
2015-01-02   5.220
2016-09-25   5.720
2017-02-13   5.290