Date	Open	High	Low	Close	Volume	Change (%)
May 24, 2011	78.82	78.92	78.78	78.88	786,714	+0.03(+0.04%)
May 23, 2011	78.94	78.96	78.85	78.85	1,091,829	+0.07(+0.08%)
May 20, 2011	78.75	78.82	78.73	78.79	1,274,412	+0.07(+0.09%)
May 19, 2011	78.56	78.76	78.53	78.71	859,280	-0.06(-0.07%)
May 18, 2011	78.87	78.91	78.72	78.77	840,002	-0.13(-0.16%)
May 17, 2011	78.88	78.95	78.84	78.90	928,080	+0.09(+0.11%)
May 16, 2011	78.65	78.85	78.63	78.81	920,709	+0.17(+0.22%)
May 13, 2011	78.60	78.79	78.57	78.64	424,807	+0.13(+0.16%)
May 12, 2011	78.59	78.66	78.45	78.52	1,041,646	-0.12(-0.15%)
May 11, 2011	78.43	78.66	78.43	78.63	731,792	+0.14(+0.18%)
May 10, 2011	78.54	78.60	78.46	78.49	727,942	-0.14(-0.18%)
May 09, 2011	78.57	78.66	78.57	78.63	681,946	+0.09(+0.11%)
May 06, 2011	78.47	78.67	78.38	78.54	1,386,509	-0.01(-0.01%)
May 05, 2011	78.41	78.58	78.41	78.55	1,087,215	+0.18(+0.23%)
May 04, 2011	78.22	78.38	78.22	78.38	895,109	+0.15(+0.19%)
May 03, 2011	78.25	78.31	78.17	78.23	660,229	+0.02(+0.03%)
May 02, 2011	78.21	78.24	78.19	78.21	833,098	+0.04(+0.05%)
Apr 29, 2011	78.00	78.19	78.00	78.16	679,843	+0.07(+0.08%)
Apr 28, 2011	78.03	78.11	77.95	78.10	780,550	+0.18(+0.24%)
Apr 27, 2011	77.84	77.94	77.73	77.92	644,566	-0.07(-0.08%)
Apr 26, 2011	77.76	77.98	77.76	77.98	775,923	+0.29(+0.37%)
Apr 25, 2011	77.63	77.77	77.61	77.69	737,659	+0.04(+0.06%)
Apr 21, 2011	77.61	77.70	77.58	77.65	609,790	+0.05(+0.07%)
Apr 20, 2011	77.64	77.70	77.56	77.60	529,509	-0.11(-0.14%)
Apr 19, 2011	77.69	77.74	77.64	77.71	641,163	+0.15(+0.20%)
Apr 18, 2011	77.45	77.65	77.41	77.56	981,139	+0.13(+0.17%)
Apr 15, 2011	77.32	77.47	77.32	77.42	532,604	+0.28(+0.36%)
Apr 14, 2011	77.23	77.28	77.14	77.14	890,817	-0.07(-0.10%)
Apr 13, 2011	77.01	77.26	77.01	77.22	723,838	+0.08(+0.10%)
Apr 12, 2011	76.97	77.18	76.97	77.14	766,731	+0.29(+0.38%)
Apr 11, 2011	76.80	76.91	76.76	76.84	527,007	+0.07(+0.10%)
Apr 08, 2011	76.81	76.87	76.75	76.77	535,059	-0.15(-0.19%)
Apr 07, 2011	76.87	77.03	76.84	76.92	928,431	+0.12(+0.15%)
Apr 06, 2011	77.02	77.03	76.80	76.80	1,335,264	-0.23(-0.30%)
Apr 05, 2011	77.16	77.17	76.98	77.03	1,092,151	-0.16(-0.21%)
Apr 04, 2011	77.11	77.28	77.11	77.19	704,713	+0.12(+0.16%)
Apr 01, 2011	76.88	77.11	76.86	77.06	1,339,773	+0.11(+0.14%)
Mar 31, 2011	77.13	77.16	76.96	76.96	1,385,686	-0.09(-0.11%)
Mar 30, 2011	77.05	77.05	77.05	77.05	1,081,218	+0.13(+0.17%)
Mar 29, 2011	76.95	77.09	76.89	76.91	735,048	-0.10(-0.12%)
Mar 28, 2011	76.96	77.05	76.92	77.01	1,971,943	-0.04(-0.05%)
Mar 25, 2011	77.25	77.25	76.99	77.05	1,108,145	-0.07(-0.09%)
Mar 24, 2011	77.20	77.25	77.07	77.11	2,144,647	-0.21(-0.27%)
Mar 23, 2011	77.47	77.49	77.28	77.32	645,073	-0.04(-0.05%)
Mar 22, 2011	77.27	77.40	77.26	77.36	826,133	+0.01(+0.01%)
Mar 21, 2011	77.35	77.44	77.32	77.35	629,519	-0.18(-0.24%)
Mar 18, 2011	77.46	77.57	77.40	77.54	522,961	-0.03(-0.04%)
Mar 17, 2011	77.50	77.65	77.40	77.57	798,808	-0.18(-0.24%)
Mar 16, 2011	77.57	77.99	77.49	77.75	1,382,661	+0.35(+0.45%)
Mar 15, 2011	77.54	77.56	77.38	77.40	918,704	+0.03(+0.04%)
Mar 14, 2011	77.46	77.58	77.37	77.37	568,130	+0.04(+0.06%)
Mar 11, 2011	77.33	77.40	77.24	77.32	647,177	+0.01(+0.02%)
Mar 10, 2011	77.16	77.35	77.07	77.31	639,165	+0.27(+0.35%)
Mar 09, 2011	76.90	77.13	76.83	77.04	806,780	+0.18(+0.24%)
Mar 08, 2011	76.91	76.91	76.79	76.86	720,182	-0.06(-0.08%)
Mar 07, 2011	76.82	77.02	76.72	76.91	848,471	+0.04(+0.05%)
Mar 04, 2011	76.78	76.94	76.75	76.88	1,040,425	+0.20(+0.27%)
Mar 03, 2011	76.80	76.80	76.63	76.67	845,151	-0.27(-0.35%)
Mar 02, 2011	77.09	77.15	76.93	76.94	691,496	-0.12(-0.16%)

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