Date	Open	High	Low	Close	Volume	Change (%)
May 31, 2012	81.09	81.11	81.00	81.04	40,501	+0.02(+0.02%)
May 30, 2012	81.03	81.08	80.99	81.03	33,328	-0.05(-0.06%)
May 29, 2012	81.08	81.14	81.04	81.08	22,284	-0.06(-0.08%)
May 25, 2012	81.17	81.19	81.10	81.14	19,275	+0.03(+0.04%)
May 24, 2012	81.09	81.13	81.07	81.11	42,069	-0.01(-0.01%)
May 23, 2012	81.24	81.24	81.09	81.11	36,270	-0.12(-0.15%)
May 22, 2012	81.23	81.29	81.22	81.23	21,768	-0.05(-0.06%)
May 21, 2012	81.24	81.30	81.20	81.28	21,338	+0.06(+0.08%)
May 18, 2012	81.19	81.26	81.18	81.22	18,530	+0.01(+0.01%)
May 17, 2012	81.23	81.30	81.18	81.21	29,348	-0.09(-0.11%)
May 16, 2012	81.30	81.34	81.28	81.30	17,104	-0.06(-0.08%)
May 15, 2012	81.35	81.36	81.30	81.36	45,014	+0.02(+0.03%)
May 14, 2012	81.26	81.34	81.25	81.34	21,656	-0.02(-0.02%)
May 11, 2012	81.36	81.36	81.30	81.35	10,431	-0.01(-0.01%)
May 10, 2012	81.36	81.38	81.31	81.36	14,754	+0.06(+0.07%)
May 09, 2012	81.40	81.40	81.29	81.30	25,099	-0.05(-0.06%)
May 08, 2012	81.38	81.38	81.30	81.35	35,656	+0.02(+0.03%)
May 07, 2012	81.37	81.37	81.28	81.33	33,839	-0.05(-0.06%)
May 04, 2012	81.43	81.43	81.29	81.38	184,980	-0.02(-0.03%)
May 03, 2012	81.39	81.47	81.35	81.40	17,652	-0.06(-0.07%)
May 02, 2012	81.45	81.46	81.40	81.45	10,130	+0.03(+0.03%)
May 01, 2012	81.48	81.48	81.37	81.43	28,403	-0.08(-0.10%)
Apr 30, 2012	81.54	81.56	81.51	81.51	14,256	+0.01(+0.01%)
Apr 27, 2012	81.48	81.52	81.46	81.50	12,480	+0.06(+0.07%)
Apr 26, 2012	81.42	81.45	81.39	81.45	18,709	+0.05(+0.07%)
Apr 25, 2012	81.34	81.39	81.31	81.39	8,798	+0.01(+0.02%)
Apr 24, 2012	81.38	81.41	81.37	81.38	19,786	+0.00(+0.00%)
Apr 23, 2012	81.34	81.38	81.30	81.38	11,112	+0.05(+0.06%)
Apr 20, 2012	81.34	81.36	81.27	81.33	17,497	+0.02(+0.02%)
Apr 19, 2012	81.37	81.38	81.30	81.31	19,290	-0.07(-0.09%)
Apr 18, 2012	81.41	81.41	81.34	81.38	11,909	-0.06(-0.07%)
Apr 17, 2012	81.45	81.49	81.40	81.44	25,373	-0.02(-0.03%)
Apr 16, 2012	81.47	81.49	81.41	81.46	20,441	+0.03(+0.04%)
Apr 13, 2012	81.40	81.48	81.40	81.43	13,388	+0.07(+0.08%)
Apr 12, 2012	81.42	81.42	81.30	81.36	28,196	-0.04(-0.05%)
Apr 11, 2012	81.25	81.41	81.25	81.40	32,142	+0.06(+0.08%)
Apr 10, 2012	81.30	81.34	81.26	81.34	21,467	+0.06(+0.08%)
Apr 09, 2012	81.29	81.31	81.25	81.27	23,361	-0.04(-0.05%)
Apr 05, 2012	81.30	81.32	81.22	81.31	22,745	+0.06(+0.07%)
Apr 04, 2012	81.36	81.36	81.22	81.26	19,244	-0.02(-0.03%)
Apr 03, 2012	81.41	81.47	81.27	81.28	21,152	-0.14(-0.17%)
Apr 02, 2012	81.41	81.43	81.35	81.42	15,191	-0.02(-0.02%)
Mar 30, 2012	81.50	81.52	81.37	81.44	29,977	-0.07(-0.09%)
Mar 29, 2012	81.56	81.56	81.47	81.51	33,648	+0.03(+0.04%)
Mar 28, 2012	81.49	81.51	81.43	81.48	11,439	-0.05(-0.06%)
Mar 27, 2012	81.41	81.53	81.41	81.52	21,669	+0.13(+0.16%)
Mar 26, 2012	81.45	81.45	81.35	81.39	24,791	-0.02(-0.02%)
Mar 23, 2012	81.37	81.41	81.29	81.41	12,873	+0.06(+0.08%)
Mar 22, 2012	81.42	81.43	81.32	81.34	26,634	-0.06(-0.07%)
Mar 21, 2012	81.38	81.43	81.38	81.40	46,307	+0.02(+0.02%)
Mar 20, 2012	81.45	81.71	81.34	81.38	99,252	-0.09(-0.11%)
Mar 19, 2012	81.49	81.66	81.41	81.47	80,700	-0.07(-0.09%)
Mar 16, 2012	81.47	81.55	81.42	81.54	21,542	-0.06(-0.08%)
Mar 15, 2012	81.56	81.64	81.55	81.60	34,202	+0.09(+0.12%)
Mar 14, 2012	81.69	81.69	81.49	81.51	35,831	-0.20(-0.25%)
Mar 13, 2012	81.71	81.80	81.67	81.71	48,518	-0.01(-0.01%)
Mar 12, 2012	81.75	82.23	81.67	81.72	55,020	+0.00(+0.00%)
Mar 09, 2012	81.67	81.72	81.59	81.72	17,615	+0.10(+0.13%)
Mar 08, 2012	81.66	81.67	81.60	81.62	24,640	+0.02(+0.02%)
Mar 07, 2012	81.59	81.62	81.54	81.60	41,416	+0.02(+0.03%)
Mar 06, 2012	81.56	81.65	81.56	81.58	69,741	+0.06(+0.07%)
Mar 05, 2012	81.60	81.60	81.50	81.52	14,220	-0.06(-0.08%)
Mar 02, 2012	81.58	81.60	81.49	81.59	32,921	+0.09(+0.11%)

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