2008-08-21   5.530
2008-10-16   5.780
2008-12-09   5.620
2008-12-10   5.430
2009-01-25   5.400
2009-11-06   5.490
2009-11-20   5.280
2010-03-31   5.570
2010-12-14   5.560
2011-11-17   5.640
2011-12-01   5.570
2012-01-12   5.700
2012-01-13   5.510
2012-04-18   5.330
2012-11-20   5.230
2013-01-29   5.480
2013-03-14   5.640
2013-11-14   5.590
2013-11-28   5.310
2014-03-16   5.420
2014-12-30   5.660
2014-12-31   5.630
2015-01-11   5.790
2015-12-01   5.580
2016-02-10   5.700
2017-02-10   6.010