2008-12-20   7.010
2009-01-10   6.900
2009-07-11   6.680
2009-08-02   6.870
2009-09-13   6.810
2009-10-08   6.520
2009-11-07   6.950
2009-11-21   6.740
2009-12-06   6.930
2010-02-10   7.350
2010-09-30   6.910
2010-12-08   6.890
2011-11-16   6.750
2012-01-15   6.740
2012-08-26   6.940
2012-11-18   6.830
2013-01-03   6.810
2013-01-05   6.740