2008-04-29 5.340 2008-06-13 5.240 2009-11-06 5.200 2010-04-01 5.270 2010-06-01 5.030 2010-09-30 5.360 2011-03-26 5.180 2011-10-09 5.250 2012-09-21 5.260 2014-03-20 5.290 2014-05-28 5.290 2014-07-22 5.250 2015-06-25 5.290 2015-07-25 5.350 2015-08-24 5.370 2016-07-23 5.310