SP53
March 1, 1990
SP57
SP49
February 1, 1990
SP56
SP50
SP55
January 1, 1990
SP58
SP42
December 1, 1989
SP52
SP44
November 1, 1989
SP51
SP47
October 1, 1989
SP46
SP43
September 1, 1989
SP38
August 1, 1989
SP41
SP40
SP39
July 1, 1989
SP34
June 15, 1989
SP37
June 1, 1989
SP36
SP33
May 1, 1989
SP35
SP32
April 1, 1989
SP27
March 1, 1989
SP31
SP30
SP24
SP29
February 1, 1989
SP22
January 1, 1989
SP28
SP26
December 1, 1988
SP25
SP23
November 1, 1988
SP21
October 1, 1988
SP20
September 1, 1988
