SP50
February 1, 1990
SP58
January 1, 1990
SP55
SP52
December 1, 1989
SP42
SP51
November 1, 1989
SP44
SP47
October 1, 1989
SP46
SP43
September 1, 1989
SP41
August 1, 1989
SP40
SP38
SP39
July 1, 1989
SP34
June 15, 1989
SP36
June 1, 1989
SP37
SP33
May 1, 1989
SP35
SP32
April 1, 1989
SP31
March 1, 1989
SP27
SP24
SP30
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
SP17
August 1, 1988
SP18
SP19
SP11
July 1, 1988
