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March 15, 2014
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May 7, 2013
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February 15, 2010
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March 1, 2009
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March 1, 2009
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April 15, 2007
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January 1, 2007
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March 1, 2006
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April 1, 2005
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September 1, 2004
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January 1, 2004
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April 1, 2003
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June 1, 2001
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June 1, 2001
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May 1, 2001
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November 15, 1998
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May 1, 1998
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September 1, 1997
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November 1, 1995
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January 1, 1994
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September 10, 1982