SP53
March 1, 1990
SP56
February 1, 1990
SP50
SP49
SP58
January 1, 1990
SP55
SP52
December 1, 1989
SP42
SP44
November 1, 1989
SP51
SP46
October 1, 1989
SP47
SP43
September 1, 1989
SP40
August 1, 1989
SP38
SP41
SP39
July 1, 1989
SP34
June 15, 1989
SP37
June 1, 1989
SP36
SP35
May 1, 1989
SP33
SP32
April 1, 1989
SP31
March 1, 1989
SP24
SP30
SP27
SP29
February 1, 1989
SP22
January 1, 1989
SP28
SP25
December 1, 1988
SP26
SP23
November 1, 1988
SP21
October 1, 1988
SP20
September 1, 1988
SP18
August 1, 1988
