2008-03-31   17.410
2008-04-28   16.870
2009-04-21   16.300
2009-05-06   14.740
2010-04-01   16.980
2010-09-30   18.240
2011-03-26   13.050
2013-03-13   16.060
2014-03-17   19.620
2014-09-22   15.680
2015-06-25   15.430
2015-07-25   14.040
2017-02-13   14.120
2017-05-20   14.460