2008-12-10   3.770
2009-01-25   3.920
2009-11-06   3.930
2009-11-20   3.920
2010-03-31   3.930
2010-12-14   3.820
2012-01-11   3.560
2012-11-20   3.730
2013-02-17   3.820
2013-03-06   3.710
2013-03-14   3.770
2013-11-28   3.750
2014-12-31   3.830
2015-01-11   3.860
2015-12-01   3.830
2016-02-10   3.910
2017-02-13   3.790