2009-01-10   3.640
2009-10-09   3.450
2009-11-07   3.520
2009-12-06   3.620
2010-02-11   3.820
2010-09-30   3.810
2010-12-08   3.640
2011-08-05   3.670
2012-01-15   3.140
2013-01-03   3.550
2013-01-05   3.720
2014-04-21   3.550
2014-08-22   3.520
2015-01-02   3.510
2016-09-25   3.810
2017-02-13   3.410