01/Sep/2011 $19.99 02/Sep/2011 $19.64 06/Sep/2011 $19.54 07/Sep/2011 $20.08 08/Sep/2011 $19.9 09/Sep/2011 $19.7 12/Sep/2011 $20.28 13/Sep/2011 $20.76 14/Sep/2011 $21.11 15/Sep/2011 $21.54 16/Sep/2011 $21.97 19/Sep/2011 $21.93 20/Sep/2011 $22.2 21/Sep/2011 $21.94 22/Sep/2011 $21.61 23/Sep/2011 $22.16 26/Sep/2011 $22.24 27/Sep/2011 $22.54 28/Sep/2011 $22.31 29/Sep/2011 $22.21 30/Sep/2011 $21.33 03/Oct/2011 $20.62 04/Oct/2011 $21.22 05/Oct/2011 $21.85 06/Oct/2011 $22.03 07/Oct/2011 $22.29 10/Oct/2011 $22.88 11/Oct/2011 $22.99 12/Oct/2011 $23.12 13/Oct/2011 $23.39 14/Oct/2011 $23.5 17/Oct/2011 $23.28 18/Oct/2011 $23.4 19/Oct/2011 $24.24 20/Oct/2011 $23.61 21/Oct/2011 $24.03 24/Oct/2011 $24.59 25/Oct/2011 $24.63 26/Oct/2011 $24.7 27/Oct/2011 $25.13 28/Oct/2011 $24.98 31/Oct/2011 $24.54 01/Nov/2011 $23.9 02/Nov/2011 $23.85 03/Nov/2011 $24.2 04/Nov/2011 $23.74 07/Nov/2011 $24.28 08/Nov/2011 $24.75 09/Nov/2011 $23.84 10/Nov/2011 $24.06 11/Nov/2011 $24.85 14/Nov/2011 $24.63 15/Nov/2011 $25.34 16/Nov/2011 $24.94 17/Nov/2011 $24.34 18/Nov/2011 $24.29 21/Nov/2011 $23.57