Date	Open	High	Low	Close	Volume	Change (%)
May 24, 2011	72.73	72.76	72.72	72.75	1,045,628	+0.00(+0.00%)
May 23, 2011	72.77	72.78	72.74	72.75	820,300	+0.01(+0.01%)
May 20, 2011	72.73	72.76	72.72	72.74	1,227,360	+0.03(+0.04%)
May 19, 2011	72.63	72.73	72.63	72.72	875,496	+0.01(+0.01%)
May 18, 2011	72.72	72.73	72.69	72.71	1,530,640	-0.03(-0.05%)
May 17, 2011	72.72	72.77	72.72	72.74	1,099,776	+0.01(+0.01%)
May 16, 2011	72.70	72.73	72.68	72.73	1,689,105	+0.03(+0.05%)
May 13, 2011	72.68	72.72	72.67	72.70	791,150	+0.03(+0.05%)
May 12, 2011	72.70	72.70	72.65	72.66	862,286	-0.03(-0.05%)
May 11, 2011	72.65	72.71	72.64	72.70	1,624,801	+0.07(+0.10%)
May 10, 2011	72.68	72.68	72.63	72.63	840,019	-0.07(-0.10%)
May 09, 2011	72.70	72.71	72.68	72.70	614,822	+0.03(+0.05%)
May 06, 2011	72.61	72.70	72.59	72.66	1,884,370	+0.01(+0.01%)
May 05, 2011	72.63	72.66	72.62	72.66	1,041,745	+0.02(+0.02%)
May 04, 2011	72.60	72.66	72.57	72.64	1,768,769	+0.03(+0.05%)
May 03, 2011	72.60	72.61	72.58	72.60	522,200	+0.03(+0.04%)
May 02, 2011	72.59	72.59	72.58	72.58	829,352	-0.01(-0.02%)
Apr 29, 2011	72.56	72.61	72.55	72.59	931,191	+0.03(+0.05%)
Apr 28, 2011	72.57	72.58	72.55	72.55	816,368	+0.00(+0.00%)
Apr 27, 2011	72.49	72.55	72.46	72.55	1,355,650	+0.03(+0.04%)
Apr 26, 2011	72.49	72.55	72.48	72.53	659,358	+0.07(+0.10%)
Apr 25, 2011	72.45	72.49	72.43	72.46	1,216,405	+0.01(+0.01%)
Apr 21, 2011	72.47	72.48	72.44	72.45	1,297,421	-0.02(-0.02%)
Apr 20, 2011	72.45	72.48	72.43	72.47	865,360	-0.01(-0.01%)
Apr 19, 2011	72.48	72.49	72.46	72.48	728,224	+0.02(+0.02%)
Apr 18, 2011	72.47	72.50	72.45	72.46	714,126	+0.02(+0.02%)
Apr 15, 2011	72.36	72.44	72.36	72.44	1,320,056	+0.14(+0.19%)
Apr 14, 2011	72.36	72.39	72.30	72.30	1,065,532	-0.07(-0.10%)
Apr 13, 2011	72.30	72.38	72.29	72.37	995,499	+0.03(+0.05%)
Apr 12, 2011	72.27	72.34	72.27	72.34	957,369	+0.12(+0.17%)
Apr 11, 2011	72.23	72.24	72.20	72.22	787,499	-0.01(-0.01%)
Apr 08, 2011	72.22	72.24	72.21	72.23	802,138	-0.03(-0.04%)
Apr 07, 2011	72.22	72.27	72.21	72.25	581,554	+0.05(+0.07%)
Apr 06, 2011	72.20	72.23	72.19	72.20	768,331	+0.00(+0.00%)
Apr 05, 2011	72.25	72.28	72.20	72.20	1,832,298	-0.08(-0.11%)
Apr 04, 2011	72.28	72.31	72.27	72.28	1,343,668	+0.02(+0.02%)
Apr 01, 2011	72.14	72.26	72.13	72.26	991,798	+0.06(+0.08%)
Mar 31, 2011	72.27	72.29	72.20	72.20	1,084,672	-0.04(-0.06%)
Mar 30, 2011	72.25	72.25	72.25	72.25	732,135	+0.04(+0.06%)
Mar 29, 2011	72.24	72.26	72.19	72.20	1,001,369	-0.03(-0.04%)
Mar 28, 2011	72.23	72.27	72.21	72.23	1,731,753	-0.03(-0.05%)
Mar 25, 2011	72.35	72.35	72.25	72.26	940,758	-0.05(-0.07%)
Mar 24, 2011	72.34	72.37	72.31	72.32	1,204,360	-0.05(-0.07%)
Mar 23, 2011	72.42	72.42	72.36	72.37	1,007,612	+0.01(+0.01%)
Mar 22, 2011	72.33	72.38	72.33	72.36	1,626,892	-0.02(-0.02%)
Mar 21, 2011	72.38	72.42	72.38	72.38	709,683	-0.08(-0.11%)
Mar 18, 2011	72.45	72.49	72.44	72.45	944,130	-0.03(-0.05%)
Mar 17, 2011	72.47	72.50	72.43	72.49	1,173,750	-0.04(-0.06%)
Mar 16, 2011	72.45	72.56	72.44	72.53	3,020,241	+0.14(+0.19%)
Mar 15, 2011	72.47	72.48	72.39	72.39	1,336,369	-0.03(-0.05%)
Mar 14, 2011	72.44	72.49	72.43	72.43	1,765,555	+0.04(+0.05%)
Mar 11, 2011	72.38	72.40	72.36	72.39	786,613	+0.01(+0.02%)
Mar 10, 2011	72.32	72.39	72.30	72.38	802,653	+0.08(+0.11%)
Mar 09, 2011	72.29	72.34	72.26	72.30	1,071,994	+0.05(+0.07%)
Mar 08, 2011	72.24	72.26	72.22	72.25	1,001,577	-0.03(-0.04%)
Mar 07, 2011	72.26	72.32	72.26	72.27	775,306	-0.05(-0.07%)
Mar 04, 2011	72.24	72.32	72.24	72.32	727,970	+0.16(+0.23%)
Mar 03, 2011	72.20	72.22	72.16	72.16	858,733	-0.15(-0.20%)
Mar 02, 2011	72.34	72.36	72.30	72.31	968,251	-0.03(-0.05%)

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