Date	Open	High	Low	Close	Volume	Change (%)
May 24, 2011	22.78	22.79	22.73	22.77	13,283	+0.01(+0.05%)
May 23, 2011	22.76	22.82	22.72	22.76	41,252	-0.08(-0.34%)
May 20, 2011	22.81	22.84	22.80	22.83	3,358	+0.00(+0.00%)
May 19, 2011	22.85	22.85	22.82	22.83	6,283	-0.02(-0.10%)
May 18, 2011	22.79	22.86	22.79	22.86	4,286	+0.08(+0.34%)
May 17, 2011	22.76	22.79	22.76	22.78	8,750	-0.05(-0.20%)
May 16, 2011	22.83	22.85	22.79	22.83	23,390	+0.00(+0.00%)
May 13, 2011	22.86	22.86	22.81	22.83	6,439	-0.03(-0.15%)
May 12, 2011	22.85	22.87	22.83	22.86	22,134	+0.01(+0.05%)
May 11, 2011	22.92	22.92	22.84	22.85	4,975	-0.07(-0.31%)
May 10, 2011	22.87	22.93	22.87	22.92	29,461	+0.02(+0.07%)
May 09, 2011	22.83	22.90	22.83	22.90	14,205	+0.06(+0.27%)
May 06, 2011	22.89	22.90	22.84	22.84	11,742	+0.00(+0.00%)
May 05, 2011	22.83	22.87	22.80	22.84	48,465	-0.02(-0.07%)
May 04, 2011	22.92	22.92	22.83	22.86	17,102	-0.05(-0.20%)
May 03, 2011	22.93	22.93	22.87	22.90	24,497	-0.08(-0.34%)
May 02, 2011	22.98	22.98	22.98	22.98	27,423	+0.03(+0.14%)
Apr 29, 2011	22.95	23.28	22.94	22.95	19,737	+0.03(+0.13%)
Apr 28, 2011	22.92	22.94	22.89	22.92	4,466	+0.06(+0.26%)
Apr 27, 2011	22.83	22.88	22.83	22.86	26,769	+0.00(+0.01%)
Apr 26, 2011	22.83	22.89	22.83	22.86	46,329	+0.05(+0.20%)
Apr 25, 2011	22.80	22.81	22.76	22.81	30,254	+0.04(+0.15%)
Apr 21, 2011	22.76	22.80	22.76	22.78	58,418	+0.04(+0.19%)
Apr 20, 2011	22.72	22.78	22.72	22.73	20,197	+0.03(+0.14%)
Apr 19, 2011	22.66	22.70	22.64	22.70	7,671	+0.05(+0.24%)
Apr 18, 2011	22.66	22.66	22.59	22.65	12,823	-0.05(-0.22%)
Apr 15, 2011	22.68	22.71	22.68	22.70	17,258	+0.06(+0.28%)
Apr 14, 2011	22.59	22.65	22.59	22.64	5,108	-0.00(-0.02%)
Apr 13, 2011	22.65	22.65	22.62	22.64	2,948	+0.01(+0.03%)
Apr 12, 2011	22.59	22.63	22.59	22.63	9,089	+0.03(+0.14%)
Apr 11, 2011	22.67	22.67	22.60	22.60	12,161	-0.05(-0.24%)
Apr 08, 2011	22.65	22.67	22.64	22.66	103,696	+0.00(+0.02%)
Apr 07, 2011	22.66	22.69	22.65	22.65	27,455	-0.01(-0.04%)
Apr 06, 2011	22.66	22.70	22.66	22.66	8,037	-0.02(-0.08%)
Apr 05, 2011	22.64	22.71	22.64	22.68	10,986	+0.01(+0.03%)
Apr 04, 2011	22.69	22.70	22.66	22.67	14,581	-0.05(-0.23%)
Apr 01, 2011	22.68	22.73	22.68	22.72	4,787	+0.07(+0.30%)
Mar 31, 2011	22.69	22.69	22.65	22.66	9,560	-0.01(-0.03%)
Mar 30, 2011	22.65	22.68	22.61	22.66	38,397	+0.09(+0.38%)
Mar 29, 2011	22.56	22.61	22.56	22.58	19,291	+0.00(+0.00%)
Mar 28, 2011	22.61	22.62	22.58	22.58	27,047	-0.03(-0.12%)
Mar 25, 2011	22.66	22.66	22.59	22.60	29,118	-0.00(-0.02%)
Mar 24, 2011	22.60	22.61	22.57	22.61	5,032	+0.05(+0.23%)
Mar 23, 2011	22.59	22.59	22.53	22.56	11,879	+0.01(+0.05%)
Mar 22, 2011	22.60	22.60	22.55	22.55	6,140	-0.07(-0.31%)
Mar 21, 2011	22.58	22.62	22.58	22.62	12,508	+0.08(+0.34%)
Mar 18, 2011	22.56	22.56	22.52	22.54	11,179	+0.05(+0.24%)
Mar 17, 2011	22.52	22.52	22.49	22.49	14,367	+0.06(+0.28%)
Mar 16, 2011	22.49	22.52	22.42	22.42	14,307	-0.09(-0.38%)
Mar 15, 2011	22.47	22.51	22.47	22.51	18,349	-0.03(-0.12%)
Mar 14, 2011	22.56	22.56	22.50	22.53	17,544	-0.04(-0.19%)
Mar 11, 2011	22.49	22.58	22.49	22.58	15,201	+0.01(+0.03%)
Mar 10, 2011	22.58	22.58	22.52	22.57	15,236	-0.04(-0.19%)
Mar 09, 2011	22.62	22.63	22.56	22.61	11,041	-0.00(-0.01%)
Mar 08, 2011	22.49	22.62	22.49	22.62	30,365	+0.04(+0.17%)
Mar 07, 2011	22.81	22.81	22.53	22.58	43,188	-0.01(-0.03%)
Mar 04, 2011	22.63	22.63	22.57	22.59	20,506	-0.02(-0.08%)
Mar 03, 2011	22.53	22.61	22.53	22.60	35,348	+0.06(+0.25%)
Mar 02, 2011	22.52	22.59	22.52	22.55	40,707	-0.03(-0.14%)

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