| Date | Open | High | Low | Close | Volume | Change (%) |
|---|---|---|---|---|---|---|
| Jul 31, 2012 | 78.11 | 78.11 | 78.10 | 78.11 | 0 | -0.04(-0.05%) |
| Jul 30, 2012 | 78.18 | 78.18 | 78.14 | 78.15 | 0 | -0.31(-0.40%) |
| Jul 27, 2012 | 78.46 | 78.46 | 78.46 | 0 | +0.27(+0.35%) | |
| Jul 26, 2012 | 78.18 | 78.21 | 78.17 | 78.19 | 0 | +0.06(+0.08%) |
| Jul 25, 2012 | 78.17 | 78.17 | 78.14 | 78.14 | 0 | -0.03(-0.04%) |
| Jul 24, 2012 | 78.17 | 78.18 | 78.15 | 78.17 | 0 | -0.15(-0.19%) |
| Jul 23, 2012 | 78.36 | 78.36 | 78.32 | 78.32 | 0 | -0.20(-0.25%) |
| Jul 20, 2012 | 78.51 | 78.51 | 78.51 | 0 | -0.11(-0.14%) | |
| Jul 19, 2012 | 78.60 | 78.64 | 78.58 | 78.62 | 0 | -0.18(-0.23%) |
| Jul 18, 2012 | 78.79 | 78.82 | 78.79 | 78.81 | 0 | -0.27(-0.34%) |
| Jul 17, 2012 | 79.08 | 79.08 | 79.07 | 79.07 | 0 | +0.21(+0.27%) |
| Jul 16, 2012 | 78.86 | 78.88 | 78.86 | 78.86 | 0 | -0.30(-0.38%) |
| Jul 13, 2012 | 79.17 | 79.17 | 79.17 | 0 | -0.11(-0.14%) | |
| Jul 12, 2012 | 79.28 | 79.29 | 79.26 | 79.28 | 0 | -0.45(-0.56%) |
| Jul 11, 2012 | 79.71 | 79.75 | 79.71 | 79.72 | 0 | +0.33(+0.42%) |
| Jul 10, 2012 | 79.39 | 79.40 | 79.38 | 79.39 | 0 | -0.16(-0.20%) |
| Jul 09, 2012 | 79.57 | 79.57 | 79.54 | 79.56 | 0 | -0.10(-0.12%) |
| Jul 06, 2012 | 79.65 | 79.65 | 79.65 | 0 | -0.25(-0.32%) | |
| Jul 05, 2012 | 79.90 | 79.92 | 79.89 | 79.90 | 0 | +0.04(+0.05%) |
| Jul 04, 2012 | 79.85 | 79.88 | 79.83 | 79.86 | 0 | +0.05(+0.06%) |
| Jul 03, 2012 | 79.81 | 79.82 | 79.79 | 79.82 | 0 | +0.30(+0.38%) |
| Jul 02, 2012 | 79.50 | 79.53 | 79.49 | 79.51 | 0 | -0.28(-0.35%) |
| Jun 29, 2012 | 79.33 | 79.99 | 79.12 | 79.79 | 0 | +0.37(+0.47%) |
| Jun 28, 2012 | 79.46 | 79.51 | 79.42 | 79.43 | 0 | -0.26(-0.33%) |
| Jun 27, 2012 | 79.69 | 79.69 | 79.68 | 79.68 | 0 | +0.19(+0.24%) |
| Jun 26, 2012 | 79.46 | 79.51 | 79.46 | 79.50 | 0 | -0.14(-0.18%) |
| Jun 25, 2012 | 79.68 | 79.68 | 79.57 | 79.64 | 0 | -0.78(-0.97%) |
| Jun 22, 2012 | 80.42 | 80.42 | 80.42 | 0 | +0.21(+0.26%) | |
| Jun 21, 2012 | 80.25 | 80.25 | 80.19 | 80.21 | 0 | +0.74(+0.93%) |
| Jun 20, 2012 | 79.46 | 79.53 | 79.43 | 79.46 | 0 | +0.49(+0.62%) |
| Jun 19, 2012 | 78.93 | 79.00 | 78.93 | 78.97 | 0 | -0.12(-0.15%) |
| Jun 18, 2012 | 79.10 | 79.11 | 79.08 | 79.10 | 0 | +0.45(+0.57%) |
| Jun 15, 2012 | 79.40 | 79.50 | 78.61 | 78.64 | 0 | -0.75(-0.94%) |
| Jun 14, 2012 | 79.38 | 79.40 | 79.36 | 79.39 | 0 | -0.04(-0.05%) |
| Jun 13, 2012 | 79.43 | 79.44 | 79.40 | 79.43 | 0 | -0.12(-0.15%) |
| Jun 12, 2012 | 79.58 | 79.62 | 79.54 | 79.56 | 0 | +0.18(+0.23%) |
| Jun 11, 2012 | 79.39 | 79.40 | 79.36 | 79.38 | 0 | -0.07(-0.09%) |
| Jun 08, 2012 | 79.44 | 79.44 | 79.44 | 0 | -0.22(-0.28%) | |
| Jun 07, 2012 | 79.64 | 79.68 | 79.62 | 79.67 | 0 | +0.42(+0.53%) |
| Jun 06, 2012 | 79.24 | 79.25 | 79.22 | 79.25 | 0 | +0.50(+0.63%) |
| Jun 05, 2012 | 78.72 | 78.75 | 78.72 | 78.75 | 0 | +0.42(+0.54%) |
| Jun 04, 2012 | 78.39 | 78.39 | 78.31 | 78.32 | 0 | +0.36(+0.46%) |
| Jun 01, 2012 | 77.96 | 77.96 | 77.96 | 0 | -0.40(-0.51%) | |
| May 31, 2012 | 78.36 | 78.36 | 78.35 | 78.36 | 0 | -0.75(-0.95%) |
| May 30, 2012 | 79.08 | 79.12 | 79.07 | 79.11 | 0 | -0.41(-0.52%) |
| May 29, 2012 | 79.51 | 79.54 | 79.49 | 79.53 | 0 | +0.06(+0.08%) |
| May 28, 2012 | 79.46 | 79.49 | 79.46 | 79.46 | 0 | -0.20(-0.25%) |
| May 25, 2012 | 79.67 | 79.67 | 79.67 | 0 | +0.08(+0.10%) | |
| May 24, 2012 | 79.57 | 79.60 | 79.57 | 79.58 | 0 | +0.14(+0.18%) |
| May 23, 2012 | 79.46 | 79.46 | 79.44 | 79.44 | 0 | -0.52(-0.65%) |
| May 22, 2012 | 79.96 | 79.97 | 79.96 | 79.96 | 0 | +0.66(+0.83%) |
| May 21, 2012 | 79.29 | 79.32 | 79.28 | 79.31 | 0 | +0.30(+0.38%) |
| May 18, 2012 | 79.00 | 79.00 | 79.00 | 0 | -0.31(-0.39%) | |
| May 17, 2012 | 79.32 | 79.39 | 79.29 | 79.32 | 0 | -1.01(-1.26%) |
| May 16, 2012 | 80.31 | 80.35 | 80.29 | 80.32 | 0 | +0.09(+0.11%) |
| May 15, 2012 | 80.18 | 80.24 | 80.14 | 80.24 | 0 | +0.38(+0.48%) |
| May 14, 2012 | 79.85 | 79.86 | 79.81 | 79.86 | 0 | -0.07(-0.09%) |
| May 11, 2012 | 79.93 | 79.93 | 79.93 | 0 | +0.04(+0.05%) | |
| May 10, 2012 | 79.88 | 79.92 | 79.86 | 79.89 | 0 | +0.26(+0.33%) |
| May 09, 2012 | 79.67 | 79.68 | 79.61 | 79.62 | 0 | -0.25(-0.31%) |
| May 08, 2012 | 79.86 | 79.89 | 79.86 | 79.88 | 0 | -0.01(-0.01%) |
| May 07, 2012 | 79.89 | 79.90 | 79.89 | 79.89 | 0 | +0.05(+0.06%) |
| May 04, 2012 | 79.83 | 79.83 | 79.83 | 0 | -0.35(-0.44%) | |
| May 03, 2012 | 80.19 | 80.19 | 80.18 | 80.18 | 0 | +0.07(+0.09%) |
| May 02, 2012 | 80.12 | 80.14 | 80.11 | 80.11 | 0 | +0.03(+0.04%) |
