2008-03-31   3.896
2008-04-28   3.871
2009-04-21   4.098
2009-05-06   3.795
2010-04-01   4.099
2010-09-30   4.046
2011-03-26   3.403
2013-03-13   3.974
2014-03-17   3.943
2014-05-28   3.645
2014-09-22   3.909
2015-06-25   3.989
2015-07-25   3.965
2017-02-13   3.863
2017-05-20   3.853