OPEN: May 20, 1998 CLOSE: June 14, 1998

OPEN: July 7, 1998 CLOSE: August 4, 1998

OPEN: September 16, 1998 CLOSE: October 14, 1998

OPEN: October 21, 1998 CLOSE: November 11, 1998

OPEN: December 3, 1998 CLOSE: December 29, 1998

OPEN: January 31, 1999 CLOSE: January 31, 1999

OPEN: October 4, 2000 CLOSE: October 25, 2000

OPEN: May 5, 2001 CLOSE: May 28, 2001

OPEN: June 9, 2001 CLOSE: June 29, 2001

OPEN: July 14, 2001 CLOSE: August 14, 2001