Date	Open	High	Low	Close	Volume
December 29, 2011	3.64	3.64	3.59	3.64	3,665,250
December 28, 2011	3.68	3.69	3.63	3.69	1,933,875
December 27, 2011	3.66	3.69	3.63	3.69	765,000
December 26, 2011	3.66	3.68	3.66	3.68	585,000
December 23, 2011	3.68	3.72	3.66	3.72	2,337,188
December 22, 2011	3.70	3.72	3.64	3.72	1,548,563
December 21, 2011	3.72	3.72	3.68	3.72	1,081,688
December 20, 2011	3.68	3.72	3.61	3.72	1,359,563
December 19, 2011	3.73	3.73	3.64	3.72	2,211,188
December 16, 2011	3.70	3.73	3.70	3.72	11,039,625
December 15, 2011	3.66	3.74	3.63	3.72	15,705,563
December 14, 2011	3.70	3.70	3.61	3.70	1,899,563
December 13, 2011	3.66	3.70	3.62	3.70	1,189,688
December 12, 2011	3.64	3.70	3.64	3.70	1,466,438
December 09, 2011	3.72	3.72	3.57	3.70	8,854,875
December 08, 2011	3.57	3.75	3.57	3.72	31,335,750
December 07, 2011	3.56	3.56	3.54	3.56	5,271,188
December 06, 2011	3.51	3.55	3.51	3.55	689,063
December 05, 2011	3.50	3.56	3.50	3.56	663,188
December 02, 2011	3.56	3.56	3.50	3.50	360,000
December 01, 2011	3.57	3.57	3.54	3.56	3,303,000
November 29, 2011	3.48	3.57	3.48	3.56	3,444,750
November 28, 2011	3.54	3.54	3.48	3.48	204,750
November 25, 2011	3.41	3.51	3.41	3.44	2,256,188
November 24, 2011	3.52	3.52	3.47	3.47	395,438
November 23, 2011	3.57	3.57	3.52	3.55	4,656,938
November 22, 2011	3.56	3.61	3.52	3.61	3,201,188
November 21, 2011	3.56	3.61	3.56	3.61	1,814,625
November 18, 2011	3.64	3.64	3.56	3.60	2,250,000
November 17, 2011	3.47	3.72	3.47	3.64	17,809,875
November 16, 2011	3.47	3.47	3.45	3.47	4,458,938
November 15, 2011	3.44	3.47	3.43	3.47	406,688
November 14, 2011	3.41	3.47	3.41	3.47	3,067,875
November 11, 2011	3.40	3.43	3.37	3.41	5,205,375
November 10, 2011	3.31	3.43	3.20	3.37	1,666,688
November 09, 2011	3.38	3.48	3.31	3.38	461,813
November 08, 2011	3.36	3.36	3.27	3.27	823,500
November 04, 2011	3.41	3.41	3.36	3.36	2,039,063
November 03, 2011	3.38	3.38	3.34	3.36	667,125
November 02, 2011	3.38	3.38	3.20	3.36	2,182,500
October 28, 2011	3.44	3.44	3.39	3.43	4,326,750
October 27, 2011	3.41	3.41	3.38	3.39	6,967,125
October 26, 2011	3.36	3.43	3.36	3.40	9,627,750
October 25, 2011	3.36	3.38	3.36	3.36	11,683,125
October 24, 2011	3.37	3.38	3.31	3.36	573,750
October 21, 2011	3.41	3.41	3.36	3.36	1,541,250
October 20, 2011	3.38	3.43	3.34	3.41	5,367,375
October 19, 2011	3.34	3.42	3.04	3.37	2,291,063
October 18, 2011	3.20	3.42	3.16	3.34	14,390,438
October 17, 2011	3.13	3.24	3.11	3.24	19,526,625
October 14, 2011	3.09	3.11	3.09	3.11	838,125
October 13, 2011	3.20	3.20	3.08	3.15	183,938
October 12, 2011	3.06	3.06	3.04	3.05	701,438
October 11, 2011	3.11	3.20	3.06	3.06	2,301,188
October 10, 2011	3.06	3.09	3.02	3.09	546,750
October 07, 2011	3.02	3.08	2.99	3.02	11,152,125
October 06, 2011	2.99	3.02	2.97	2.99	10,821,375
October 05, 2011	2.99	3.06	2.99	2.99	8,188,313
October 04, 2011	2.92	3.00	2.67	2.99	11,058,750
October 03, 2011	3.24	3.24	3.06	3.07	1,282,500
September 30, 2011	3.08	3.22	3.08	3.22	1,815,188
September 29, 2011	3.08	3.08	3.06	3.08	8,665,313
September 28, 2011	2.94	3.20	2.94	3.08	919,688
September 26, 2011	3.18	3.20	2.84	2.93	14,812,875
September 23, 2011	3.29	3.29	3.09	3.18	10,958,625
September 22, 2011	3.36	3.36	3.30	3.30	5,721,750
September 21, 2011	3.43	3.43	3.38	3.38	825,188
September 20, 2011	3.43	3.47	3.43	3.44	462,938
September 19, 2011	3.45	3.45	3.45	3.45	1,744,875
September 16, 2011	3.41	3.47	3.40	3.47	695,250
September 15, 2011	3.42	3.45	3.41	3.41	2,677,500
September 14, 2011	3.47	3.47	3.41	3.41	465,750
September 13, 2011	3.45	3.47	3.45	3.45	75,938
September 12, 2011	3.45	3.48	3.43	3.47	878,063
September 09, 2011	3.45	3.48	3.45	3.45	734,063
September 08, 2011	3.43	3.45	3.43	3.45	880,875
September 07, 2011	3.45	3.47	3.43	3.43	738,000
September 06, 2011	3.48	3.48	3.41	3.47	12,506,063
September 05, 2011	3.51	3.51	3.47	3.48	668,250
September 02, 2011	3.52	3.52	3.51	3.51	443,813
September 01, 2011	3.56	3.56	3.52	3.52	639,000
August 31, 2011	3.47	3.56	3.47	3.56	1,529,438
August 26, 2011	3.49	3.49	3.45	3.45	1,788,188
August 25, 2011	3.50	3.51	3.50	3.50	10,612,125
August 24, 2011	3.48	3.51	3.48	3.50	7,224,188
August 23, 2011	3.50	3.52	3.48	3.48	7,931,813
August 22, 2011	3.48	3.50	3.48	3.50	1,235,250
August 19, 2011	3.48	3.52	3.48	3.50	14,509,125
August 18, 2011	3.50	3.55	3.50	3.55	478,125
August 17, 2011	3.56	3.56	3.50	3.54	752,625
August 16, 2011	3.50	3.56	3.50	3.54	3,018,375
August 15, 2011	3.56	3.56	3.49	3.50	3,974,063
August 12, 2011	3.54	3.54	3.46	3.47	6,111,000
August 11, 2011	3.38	3.56	3.36	3.56	7,864,875
August 10, 2011	3.55	3.57	3.45	3.47	9,073,688
August 09, 2011	3.47	3.48	3.34	3.47	10,036,688
August 08, 2011	3.61	3.61	3.51	3.53	4,706,438
August 05, 2011	3.63	3.64	3.52	3.64	6,112,125
August 04, 2011	3.75	3.76	3.73	3.75	6,409,125
August 03, 2011	3.79	3.79	3.69	3.75	4,175,438
August 02, 2011	3.82	3.82	3.80	3.80	3,374,438
August 01, 2011	3.73	3.82	3.70	3.82	15,285,938
July 29, 2011	3.68	3.68	3.66	3.66	2,652,188
July 28, 2011	3.69	3.72	3.65	3.66	5,713,875
July 27, 2011	3.72	3.72	3.68	3.69	672,750
July 26, 2011	3.68	3.73	3.66	3.73	4,205,813
July 25, 2011	3.73	3.73	3.64	3.68	3,201,188
July 22, 2011	3.76	3.76	3.64	3.69	2,551,500
July 21, 2011	3.77	3.77	3.56	3.75	4,260,375
July 20, 2011	3.73	3.77	3.73	3.75	20,015,438
July 19, 2011	3.56	3.70	3.54	3.64	22,299,750
July 18, 2011	3.53	3.58	3.53	3.58	4,043,250
July 15, 2011	3.57	3.59	3.53	3.53	5,927,625
July 14, 2011	3.59	3.60	3.56	3.58	8,227,688
July 13, 2011	3.56	3.57	3.54	3.56	7,837,313
July 12, 2011	3.53	3.54	3.52	3.54	6,637,500
July 11, 2011	3.54	3.56	3.53	3.53	1,677,375
July 08, 2011	3.58	3.58	3.53	3.54	3,583,688
July 07, 2011	3.56	3.59	3.54	3.58	10,843,313
July 06, 2011	3.54	3.56	3.50	3.50	5,753,250
July 05, 2011	3.53	3.70	3.53	3.54	9,911,813
July 04, 2011	3.52	3.57	3.52	3.53	4,338,563
July 01, 2011	3.41	3.52	3.41	3.52	12,779,438
June 30, 2011	3.42	3.42	3.41	3.41	7,081,875
June 29, 2011	3.45	3.45	3.39	3.41	4,398,188
June 28, 2011	3.38	3.40	3.38	3.39	17,742,375
June 27, 2011	3.38	3.38	3.37	3.38	4,058,438
June 24, 2011	3.40	3.41	3.37	3.38	20,363,063
June 23, 2011	3.41	3.47	3.38	3.40	8,683,875
June 22, 2011	3.37	3.41	3.35	3.41	21,396,938
June 21, 2011	3.37	3.40	3.36	3.36	3,427,313
June 17, 2011	3.38	3.41	3.36	3.37	8,302,500
June 16, 2011	3.34	3.41	3.31	3.37	8,775,000
June 15, 2011	3.38	3.38	3.34	3.34	23,561,438
June 14, 2011	3.55	3.56	3.38	3.38	18,075,375
June 13, 2011	3.59	3.62	3.47	3.60	7,972,875
June 10, 2011	3.65	3.65	3.63	3.63	890,438
June 09, 2011	3.64	3.66	3.60	3.65	6,441,188
June 08, 2011	3.63	3.67	3.63	3.67	1,900,688
June 07, 2011	3.63	3.70	3.63	3.70	3,025,688
June 06, 2011	3.63	3.71	3.59	3.71	2,833,313
June 03, 2011	3.68	3.70	3.64	3.64	1,689,188
June 02, 2011	3.65	3.68	3.61	3.68	20,003,625
June 01, 2011	3.76	3.78	3.72	3.73	3,674,813
May 31, 2011	3.74	3.78	3.68	3.78	29,730,375
May 30, 2011	3.71	3.74	3.70	3.73	3,252,375
May 27, 2011	3.68	3.72	3.64	3.70	6,275,250
May 26, 2011	3.70	3.78	3.70	3.72	6,021,563
May 25, 2011	3.75	3.75	3.69	3.69	3,084,750
May 24, 2011	3.84	3.84	3.68	3.76	4,130,438
May 23, 2011	3.93	3.93	3.84	3.84	904,500
May 20, 2011	3.95	3.95	3.79	3.93	7,818,750
May 19, 2011	3.93	3.96	3.88	3.89	7,267,500
May 18, 2011	3.96	3.96	3.92	3.93	9,730,125
May 17, 2011	3.95	3.96	3.91	3.96	5,050,125
May 16, 2011	3.96	3.96	3.93	3.96	1,905,188
May 13, 2011	4.00	4.00	3.95	3.98	3,619,125
May 12, 2011	4.00	4.12	4.00	4.00	17,345,250
May 11, 2011	3.95	4.00	3.92	3.95	4,412,813
May 10, 2011	3.91	3.98	3.89	3.95	3,076,875
May 09, 2011	3.82	3.91	3.82	3.91	2,552,063
May 06, 2011	3.80	3.96	3.77	3.91	3,415,500
May 05, 2011	3.98	3.98	3.86	3.92	4,181,625
May 04, 2011	4.12	4.12	3.98	3.98	4,707,563
May 03, 2011	4.20	4.20	4.08	4.12	5,104,688
May 02, 2011	4.06	4.21	4.04	4.19	22,468,500
April 29, 2011	3.98	4.06	3.96	4.06	22,502,250
April 28, 2011	3.98	4.02	3.91	3.98	11,477,813
April 27, 2011	3.99	4.00	3.94	4.00	7,654,500
April 26, 2011	3.96	4.00	3.93	4.00	12,868,875
April 25, 2011	3.93	4.00	3.92	3.98	8,638,313
April 20, 2011	3.90	3.92	3.80	3.91	16,916,063
April 19, 2011	3.80	3.95	3.80	3.91	17,754,750
April 18, 2011	3.75	3.94	3.75	3.90	17,591,063
April 15, 2011	3.73	3.78	3.68	3.75	22,937,625
April 14, 2011	3.64	3.73	3.64	3.65	19,699,875
April 13, 2011	3.71	3.72	3.63	3.64	2,256,750
April 12, 2011	3.79	3.80	3.68	3.71	6,350,625
April 11, 2011	3.60	3.79	3.59	3.79	24,097,500
April 08, 2011	3.58	3.62	3.57	3.60	7,283,250
April 07, 2011	3.60	3.61	3.57	3.57	4,255,313
April 06, 2011	3.52	3.65	3.52	3.60	22,093,875
April 05, 2011	3.64	3.64	3.58	3.58	8,644,500
April 04, 2011	3.61	3.66	3.61	3.64	28,152,563
April 01, 2011	3.60	3.63	3.59	3.61	11,750,063
March 31, 2011	3.61	3.62	3.60	3.61	2,585,813
March 30, 2011	3.58	3.62	3.56	3.60	4,314,375
March 29, 2011	3.64	3.64	3.56	3.59	7,017,750
March 28, 2011	3.57	3.64	3.57	3.63	6,445,688
March 25, 2011	3.47	3.58	3.47	3.56	8,432,438
March 24, 2011	3.46	3.48	3.46	3.46	15,940,688
March 23, 2011	3.48	3.49	3.45	3.46	4,007,250
March 22, 2011	3.50	3.54	3.48	3.50	3,020,063
March 21, 2011	3.56	3.56	3.50	3.50	4,773,375
March 18, 2011	3.44	3.56	3.44	3.56	6,926,063
March 17, 2011	3.50	3.50	3.43	3.43	9,226,125
March 16, 2011	3.48	3.59	3.42	3.51	35,379,000
March 15, 2011	3.65	3.68	3.47	3.48	24,041,250
March 14, 2011	3.55	3.67	3.55	3.64	15,055,313
March 11, 2011	3.56	3.59	3.52	3.56	11,280,375
March 10, 2011	3.70	3.70	3.58	3.59	13,657,500
March 09, 2011	3.73	3.74	3.69	3.70	8,726,625
March 08, 2011	3.70	3.72	3.68	3.72	5,271,750
March 07, 2011	3.72	3.74	3.69	3.73	4,574,813
March 04, 2011	3.66	3.73	3.66	3.68	4,925,250
March 03, 2011	3.64	3.71	3.64	3.66	6,036,188
March 02, 2011	3.62	3.64	3.56	3.64	1,536,750
March 01, 2011	3.70	3.70	3.57	3.62	8,643,375
February 28, 2011	3.73	3.73	3.56	3.71	3,759,750
February 25, 2011	3.59	3.72	3.59	3.72	8,405,438
February 24, 2011	3.56	3.59	3.54	3.59	7,395,750
February 23, 2011	3.61	3.61	3.52	3.60	18,770,625
February 22, 2011	3.78	3.78	3.61	3.66	19,766,813
February 21, 2011	3.89	3.90	3.75	3.78	11,029,500
February 18, 2011	3.96	3.96	3.88	3.89	8,814,375
February 17, 2011	3.97	3.99	3.90	3.96	8,860,500
February 16, 2011	3.96	3.99	3.94	3.97	3,441,938
February 15, 2011	3.91	3.95	3.86	3.95	4,844,250
February 14, 2011	3.95	4.00	3.85	3.86	11,709,563
February 11, 2011	3.88	3.96	3.84	3.95	15,385,500
February 10, 2011	3.97	3.97	3.82	3.91	19,433,813
February 09, 2011	4.04	4.04	3.93	4.00	18,778,500
February 08, 2011	3.96	4.09	3.94	4.06	33,477,750
February 07, 2011	3.80	3.96	3.72	3.94	40,101,188
February 04, 2011	3.70	3.82	3.66	3.80	54,340,313
February 03, 2011	3.56	3.70	3.55	3.70	25,536,938
February 02, 2011	3.56	3.59	3.50	3.54	13,197,375
February 01, 2011	3.47	3.57	3.47	3.50	64,823,063
January 31, 2011	3.57	3.57	3.38	3.47	32,397,188
January 28, 2011	3.74	3.77	3.59	3.64	11,632,500
January 27, 2011	3.57	3.77	3.54	3.72	32,326,875
January 26, 2011	3.50	3.55	3.50	3.55	10,555,875
January 25, 2011	3.46	3.61	3.46	3.52	18,050,625
January 24, 2011	3.55	3.55	3.36	3.45	17,046,563
January 21, 2011	3.64	3.66	3.52	3.55	14,012,438
January 20, 2011	3.56	3.72	3.48	3.70	26,336,813
January 19, 2011	3.46	3.60	3.46	3.56	44,364,938
January 18, 2011	3.46	3.48	3.43	3.45	21,562,313
January 17, 2011	3.45	3.49	3.43	3.45	19,909,688
January 14, 2011	3.46	3.47	3.29	3.43	19,082,250
January 13, 2011	3.41	3.51	3.41	3.45	34,924,500
January 12, 2011	3.31	3.43	3.30	3.40	41,276,250
January 11, 2011	3.34	3.34	3.24	3.29	16,143,188
January 10, 2011	3.36	3.37	3.25	3.32	27,039,938
January 07, 2011	3.31	3.36	3.27	3.36	80,632,688
January 06, 2011	3.15	3.28	3.15	3.28	99,506,813
January 05, 2011	3.08	3.14	3.00	3.13	26,184,938
January 04, 2011	3.13	3.15	3.06	3.08	54,532,688
January 03, 2011	2.93	3.08	2.90	3.08	53,102,250