Date	Open	High	Low	Close	Volume	Change (%)
May 24, 2011	20.37	20.48	20.37	20.48	3,628	+0.02(+0.10%)
May 23, 2011	20.42	20.48	20.42	20.46	46,766	+0.15(+0.73%)
May 20, 2011	20.31	20.31	20.31	20.31	1,776	-0.04(-0.21%)
May 19, 2011	20.24	20.35	20.24	20.35	10,146	-0.02(-0.09%)
May 18, 2011	20.43	20.43	20.34	20.37	2,203	-0.11(-0.56%)
May 17, 2011	20.46	20.51	20.46	20.48	3,087	+0.09(+0.42%)
May 16, 2011	20.31	20.40	20.27	20.40	6,571	+0.11(+0.53%)
May 13, 2011	20.29	20.29	20.29	20.29	370	+0.20(+0.98%)
May 12, 2011	20.26	20.26	20.09	20.09	4,978	-0.15(-0.74%)
May 11, 2011	20.15	20.28	20.12	20.24	9,195	+0.05(+0.25%)
May 10, 2011	20.24	20.26	20.18	20.19	4,752	-0.06(-0.29%)
May 09, 2011	20.24	20.26	20.24	20.25	3,734	+0.10(+0.50%)
May 06, 2011	20.13	20.17	20.13	20.15	7,181	-0.17(-0.83%)
May 05, 2011	20.32	20.32	20.32	20.32	3,346	+0.17(+0.84%)
May 04, 2011	20.14	20.18	20.13	20.15	19,690	+0.10(+0.51%)
May 03, 2011	20.07	20.07	20.05	20.05	1,394	+0.14(+0.70%)

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