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June 11, 2017
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October 1, 2014
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August 23, 2011
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July 1, 2010
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November 1, 2009
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November 1, 2008
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June 2, 2008
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May 15, 2008
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February 1, 2006
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October 1, 2004
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October 10, 2003
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January 1, 2002
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September 14, 2000
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March 22, 2000
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October 1, 1998
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September 20, 1996
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May 27, 1993