2008-12-10   8.475
2009-01-25   8.626
2009-11-06   9.077
2009-11-20   8.446
2010-02-17   8.579
2010-03-31   8.528
2010-12-14   8.773
2012-01-11   8.618
2012-11-20   8.412
2013-02-17   8.733
2013-03-06   8.306
2013-03-14   8.407
2013-11-28   8.359
2014-12-31   8.288
2015-01-11   8.538
2015-12-01   8.345
2016-02-10   8.323
2017-02-13   8.267