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                             April 15, 2010 April 15, 2010
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             February 15, 2009 February 15, 2009
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 1, 2008 March 1, 2008
 
 
 
                     
                 
                
                      
                    
                    
                
            
                
                    
                        
    
        
            
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                             November 1, 2006 November 1, 2006
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             October 1, 2006 October 1, 2006
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 1, 2006 September 1, 2006
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             February 15, 2005 February 15, 2005
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             October 1, 2004 October 1, 2004
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             April 1, 2004 April 1, 2004
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             January 1, 2004 January 1, 2004
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 1, 2003 September 1, 2003
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 15, 2003 March 15, 2003
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             November 1, 2002 November 1, 2002
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 15, 2002 September 15, 2002
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             August 15, 2002 August 15, 2002
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             September 15, 2001 September 15, 2001
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 15, 2001 March 15, 2001
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 15, 2001 March 15, 2001
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             September 15, 1998 September 15, 1998
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 26, 1997 September 26, 1997
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 15, 1997 September 15, 1997
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             September 15, 1996 September 15, 1996
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 15, 1996 September 15, 1996
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 18, 1996 March 18, 1996
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             October 23, 1995 October 23, 1995
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 15, 1995 September 15, 1995
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             May 22, 1995 May 22, 1995
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             April 1, 1995 April 1, 1995
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 19, 1994 September 19, 1994
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             October 15, 1993 October 15, 1993
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             June 1, 1993 June 1, 1993
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 22, 1993 March 22, 1993
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 22, 1993 March 22, 1993
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             September 30, 1992 September 30, 1992
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 30, 1992 September 30, 1992
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             January 30, 1992 January 30, 1992
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             December 7, 1991 December 7, 1991
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             September 30, 1991 September 30, 1991
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             May 1, 1991 May 1, 1991
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             April 23, 1990 April 23, 1990
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             March 1, 1979 March 1, 1979
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             May 1, 1978 May 1, 1978
 
 
 
                     
                 
                
                     
                
            
                
                    
                        
    
        
            
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                             October 1, 1974 October 1, 1974
 
 
 
                     
                 
                
            
                
                    
                        
    
        
            
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                             May 30, 1973 May 30, 1973
 
 
 
                     
                 
                
                     
        
            
            
                
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