2008-03-31   4.010
2008-04-28   4.086
2009-04-21   4.152
2009-05-06   4.101
2010-04-01   4.077
2010-09-30   4.003
2011-03-26   3.852
2013-03-13   4.130
2014-03-17   4.147
2014-05-28   3.997
2014-09-22   3.966
2015-06-25   3.950
2015-07-25   4.010
2017-02-13   3.993
2017-05-20   3.990