Date	Open	High	Low	Close	Volume	Change (%)
May 24, 2011	19.94	19.98	19.93	19.95	68,086	-0.01(-0.04%)
May 23, 2011	19.95	20.00	19.94	19.95	131,102	+0.00(+0.00%)
May 20, 2011	19.93	19.96	19.93	19.95	76,507	+0.00(+0.02%)
May 19, 2011	19.88	19.95	19.87	19.95	84,721	+0.01(+0.05%)
May 18, 2011	19.95	19.96	19.94	19.94	87,719	-0.03(-0.13%)
May 17, 2011	19.94	19.98	19.93	19.97	77,794	+0.03(+0.15%)
May 16, 2011	19.93	19.95	19.92	19.94	174,941	+0.01(+0.05%)
May 13, 2011	19.86	19.95	19.86	19.93	70,632	+0.02(+0.09%)
May 12, 2011	19.88	19.93	19.88	19.91	66,912	+0.00(+0.00%)
May 11, 2011	19.85	19.93	19.85	19.91	80,148	+0.05(+0.23%)
May 10, 2011	19.90	19.93	19.86	19.86	92,227	-0.05(-0.25%)
May 09, 2011	19.90	19.94	19.90	19.91	106,538	+0.00(+0.02%)
May 06, 2011	19.84	19.94	19.84	19.91	30,592	+0.03(+0.14%)
May 05, 2011	19.86	19.90	19.86	19.88	27,240	+0.04(+0.18%)
May 04, 2011	19.79	19.86	19.79	19.84	69,566	+0.03(+0.14%)
May 03, 2011	19.82	19.84	19.81	19.82	104,879	+0.00(+0.00%)
May 02, 2011	19.82	19.82	19.82	19.82	56,018	+0.00(+0.02%)
Apr 29, 2011	19.73	19.82	19.73	19.81	61,836	+0.05(+0.27%)
Apr 28, 2011	19.71	19.77	19.71	19.76	26,869	+0.03(+0.16%)
Apr 27, 2011	19.69	19.73	19.69	19.73	160,721	-0.02(-0.12%)
Apr 26, 2011	19.67	19.76	19.67	19.75	79,426	+0.08(+0.43%)
Apr 25, 2011	19.66	19.68	19.64	19.67	69,877	+0.05(+0.27%)
Apr 21, 2011	19.62	19.66	19.62	19.62	43,692	-0.03(-0.14%)
Apr 20, 2011	19.66	19.68	19.63	19.64	60,608	-0.00(-0.02%)
Apr 19, 2011	19.67	19.71	19.64	19.65	484,860	+0.01(+0.07%)
Apr 18, 2011	19.61	19.65	19.58	19.63	81,333	+0.04(+0.20%)
Apr 15, 2011	19.53	19.60	19.53	19.59	50,283	+0.10(+0.52%)
Apr 14, 2011	19.52	19.53	19.48	19.49	68,530	-0.02(-0.13%)
Apr 13, 2011	19.50	19.52	19.47	19.52	50,615	+0.03(+0.14%)
Apr 12, 2011	19.46	19.51	19.46	19.49	107,819	+0.06(+0.31%)
Apr 11, 2011	19.40	19.47	19.40	19.43	56,544	+0.00(+0.02%)
Apr 08, 2011	19.44	19.44	19.41	19.43	48,308	-0.04(-0.18%)
Apr 07, 2011	19.43	19.47	19.43	19.46	78,545	+0.02(+0.09%)
Apr 06, 2011	19.48	19.48	19.44	19.44	41,273	-0.04(-0.18%)
Apr 05, 2011	19.47	19.52	19.45	19.48	153,476	-0.02(-0.11%)
Apr 04, 2011	19.52	19.55	19.50	19.50	50,462	-0.01(-0.07%)
Apr 01, 2011	19.46	19.52	19.45	19.51	31,263	+0.06(+0.31%)
Mar 31, 2011	19.52	19.52	19.45	19.45	109,050	-0.01(-0.04%)
Mar 30, 2011	19.47	19.49	19.44	19.46	55,780	+0.01(+0.07%)
Mar 29, 2011	19.48	19.48	19.41	19.45	110,044	-0.03(-0.13%)
Mar 28, 2011	19.49	19.49	19.46	19.47	21,203	-0.01(-0.05%)
Mar 25, 2011	19.52	19.54	19.46	19.48	65,161	-0.01(-0.07%)
Mar 24, 2011	19.53	19.54	19.50	19.50	41,009	-0.06(-0.31%)
Mar 23, 2011	19.54	19.60	19.49	19.56	705,455	+0.04(+0.18%)
Mar 22, 2011	19.54	19.57	19.50	19.52	75,773	-0.01(-0.07%)
Mar 21, 2011	19.54	19.57	19.53	19.53	18,189	-0.04(-0.21%)
Mar 18, 2011	19.59	19.59	19.57	19.58	17,235	-0.01(-0.05%)
Mar 17, 2011	19.62	19.62	19.57	19.59	29,499	-0.02(-0.13%)
Mar 16, 2011	19.59	19.66	19.56	19.61	32,009	+0.09(+0.45%)
Mar 15, 2011	19.58	19.59	19.52	19.52	76,893	-0.04(-0.20%)
Mar 14, 2011	19.57	19.58	19.54	19.56	58,543	+0.05(+0.23%)
Mar 11, 2011	19.54	19.58	19.48	19.52	92,689	+0.02(+0.09%)
Mar 10, 2011	19.50	19.52	19.44	19.50	69,269	+0.05(+0.25%)
Mar 09, 2011	19.45	19.47	19.40	19.45	26,941	+0.07(+0.36%)
Mar 08, 2011	19.39	19.42	19.38	19.38	67,765	-0.04(-0.20%)
Mar 07, 2011	19.35	19.45	19.35	19.42	66,041	+0.02(+0.11%)
Mar 04, 2011	19.38	19.42	19.38	19.40	53,723	+0.04(+0.18%)
Mar 03, 2011	19.40	19.40	19.34	19.36	64,053	-0.07(-0.38%)
Mar 02, 2011	19.48	19.49	19.43	19.44	34,949	-0.04(-0.18%)

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