2009-01-25   3.580
2009-11-06   3.390
2009-11-20   3.590
2010-03-31   3.360
2010-12-14   3.810
2012-01-13   3.330
2013-11-28   3.170
2014-08-22   3.430
2014-12-31   3.450
2015-12-01   3.580
2017-02-13   3.150