| Month Ended 4/30/2012 | ||
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| 04/10/2012(Next Day Disclosure Return) | ||
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| Month Ended 3/31/2012 | ||
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| Month Ended 2/29/2012 | ||
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| Month Ended 1/31/2012 | ||
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| Month Ended 12/31/2011 | ||
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| Month Ended 11/30/2011 | ||
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| Month Ended 10/31/2011 | ||
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| Month Ended 09/30/2011 | ||
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| Month Ended 08/31/2011 | ||
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| Month Ended 07/31/2011 | ||
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| Month Ended 06/30/2011 | ||
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| Month Ended 05/31/2011 | ||
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| Month Ended 04/30/2011 | ||
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| Month Ended 03/31/2011 | ||
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| Month Ended 02/28/2011 | ||
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| Month Ended 01/31/2011 | ||
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| 01/12/2011 (Next Day Disclosure Return) | ||
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| Month Ended 12/31/2010 | ||
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| Month Ended 11/30/2010 | ||
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