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March 20, 2012
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October 11, 2011
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January 1, 2011
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October 1, 2010
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January 1, 2010
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October 20, 2009
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November 25, 2008
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September 1, 2008
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September 1, 2007
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March 27, 2007
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November 28, 2006
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May 1, 2005
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March 1, 2005
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October 1, 2003
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April 1, 2003
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September 1, 2001
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May 1, 2000