| Date | Value |
|---|
| Jul 20, 2012 | 845.00 |
| Jul 19, 2012 | 854.00 |
| Jul 18, 2012 | 840.00 |
| Jul 17, 2012 | 844.00 |
| Jul 16, 2012 | 847.00 |
| Jul 13, 2012 | 850.00 |
| Jul 12, 2012 | 834.00 |
| Jul 11, 2012 | 831.00 |
| Jul 10, 2012 | 832.00 |
| Jul 09, 2012 | 829.00 |
| Jul 06, 2012 | 834.00 |
| Jul 05, 2012 | 839.00 |
| Jul 04, 2012 | 831.00 |
| Jul 03, 2012 | 836.00 |
| Jul 02, 2012 | 822.00 |
| Jun 29, 2012 | 820.00 |
| Jun 28, 2012 | 816.00 |
| Jun 27, 2012 | 804.00 |
| Jun 26, 2012 | 804.00 |
| Jun 25, 2012 | 805.00 |
| Jun 22, 2012 | 796.00 |
| Jun 21, 2012 | 803.00 |
| Jun 20, 2012 | 815.00 |
| Jun 19, 2012 | 816.00 |
| Jun 18, 2012 | 812.00 |
| Jun 15, 2012 | 817.00 |
| Jun 14, 2012 | 807.00 |
| Jun 13, 2012 | 812.00 |
| Jun 12, 2012 | 813.00 |
| Jun 11, 2012 | 813.00 |
| Jun 08, 2012 | 805.00 |
| Jun 07, 2012 | 816.00 |
| Jun 06, 2012 | 822.00 |
| Jun 01, 2012 | 821.00 |
| May 31, 2012 | 830.00 |
| May 30, 2012 | 832.00 |
| May 29, 2012 | 838.00 |
| May 28, 2012 | 837.00 |
| May 25, 2012 | 835.00 |
| May 24, 2012 | 830.00 |
| May 23, 2012 | 820.00 |
| May 22, 2012 | 827.00 |
| May 21, 2012 | 828.00 |
| May 18, 2012 | 832.00 |
| May 17, 2012 | 825.00 |
| May 16, 2012 | 827.00 |
| May 15, 2012 | 832.00 |
| May 14, 2012 | 841.00 |
| May 11, 2012 | 844.00 |
| May 10, 2012 | 853.00 |
| May 09, 2012 | 847.00 |
| May 08, 2012 | 858.00 |
| May 04, 2012 | 859.00 |
| May 03, 2012 | 862.00 |
| May 02, 2012 | 870.00 |
| May 01, 2012 | 880.00 |
| Apr 30, 2012 | 876.00 |
| Apr 27, 2012 | 868.00 |
| Apr 26, 2012 | 863.00 |
| Apr 25, 2012 | 852.00 |
| Apr 24, 2012 | 846.00 |
| Apr 23, 2012 | 840.00 |
| Apr 20, 2012 | 838.00 |
| Apr 19, 2012 | 835.00 |
| Apr 18, 2012 | 841.00 |
| Apr 17, 2012 | 840.00 |
| Apr 16, 2012 | 845.00 |
| Apr 13, 2012 | 852.00 |
| Apr 12, 2012 | 855.00 |
| Apr 11, 2012 | 850.00 |
| Apr 10, 2012 | 866.00 |
| Apr 05, 2012 | 872.00 |
| Apr 04, 2012 | 873.00 |
| Apr 03, 2012 | 875.00 |
| Apr 02, 2012 | 866.00 |
| Mar 30, 2012 | 869.00 |
| Mar 29, 2012 | 858.00 |
| Mar 28, 2012 | 863.00 |
| Mar 27, 2012 | 866.00 |
| Mar 26, 2012 | 870.00 |
| Mar 23, 2012 | 864.00 |
| Mar 22, 2012 | 862.00 |
| Mar 21, 2012 | 875.00 |
| Mar 20, 2012 | 876.00 |
| Mar 19, 2012 | 891.00 |
| Mar 16, 2012 | 901.00 |
| Mar 15, 2012 | 890.00 |
| Mar 14, 2012 | 890.00 |
| Mar 13, 2012 | 889.00 |
| Mar 12, 2012 | 875.00 |
| Mar 09, 2012 | 866.00 |
| Mar 08, 2012 | 866.00 |
| Mar 07, 2012 | 860.00 |
| Mar 06, 2012 | 868.00 |
| Mar 05, 2012 | 878.00 |
| Mar 02, 2012 | 886.00 |
| Mar 01, 2012 | 881.00 |