2008-12-10   9.110
2009-01-25   8.630
2009-11-06   8.570
2009-11-20   9.430
2010-03-31   7.160
2010-12-14   8.460
2012-01-11   6.370
2012-11-20   8.800
2013-02-17   8.490
2013-03-06   8.450
2013-03-14   8.690
2013-11-28   8.250
2014-12-31   8.150
2015-01-11   7.680
2015-12-01   8.540
2016-02-10   7.910
2017-02-13   8.270