2008-12-20   6.737
2009-01-10   6.760
2009-08-02   6.749
2009-09-13   6.771
2009-10-08   6.741
2009-11-07   6.701
2009-11-21   6.727
2009-12-06   6.704
2010-02-10   6.773
2010-09-30   6.750
2010-12-08   6.765
2011-11-16   6.684
2012-01-15   6.674
2012-08-26   6.656
2012-11-18   6.654
2013-01-03   6.696
2013-01-05   6.657