December 10, 1998 November 12, 1998 September 10, 1998 August 13, 1998 June 11, 1998 May 14, 1998 March 12, 1998 February 12, 1998

December 11, 1997 November 13, 1997 October 9, 1997 September 12, 1997 July 10, 1997 June 12, 1997 May 8, 1997 March 13, 1997 February 13, 1997

December 12, 1996 November 14, 1996 August 8, 1996 June 13, 1996 May 9, 1996 March 14, 1996

December 15, 1995 October 12, 1995 September 14, 1995 June 8, 1995 May 11, 1995 March 9, 1995 February 9,1995

December 8, 1994 November 10, 1994 October 13, 1994 September 8, 1994 August 11, 1994 June 9, 1994 April 14, 1994 March 10, 1994

December 9, 1993 November 11, 1993 June 10, 1993 May 13, 1993 April 8, 1993 February 11, 1993

December10 , 1992 September 10, 1992 August 13, 1992 June 11, 1992 May 14, 1992 April 9, 1992 March 12, 1992

December 12, 1991 October 10, 1991 August 8, 1991 June 13, 1991 May 10, 1991 February 14, 1991

December 13, 1990 November 8, 1990 September 13, 1990 August 9, 1990 June 14, 1990 May 10, 1990 April 12, 1990 March 8, 1990

December 14, 1989 November 9, 1989 September, 1989 August 10, 1989 June 8, 1989 May 11, 1989 April 13, 1989 March 9, 1989