SP68 June 1, 1990
SP71 June 1, 1990
SP59 May 1, 1990
SP66 May 1, 1990
SP64 April 1, 1990
SP65 April 1, 1990
SP57 March 1, 1990
SP53 March 1, 1990
SP50 February 1, 1990
SP49 February 1, 1990
SP56 February 1, 1990
SP58 January 1, 1990
SP55 January 1, 1990
SP42 December 1, 1989
SP52 December 1, 1989
SP51 November 1, 1989
SP44 November 1, 1989
SP46 October 1, 1989
SP47 October 1, 1989
SP43 September 1, 1989
SP40 August 1, 1989
SP41 August 1, 1989
SP38 August 1, 1989
SP39 July 1, 1989
SP34 June 15, 1989
SP37 June 1, 1989
SP36 June 1, 1989
SP33 May 1, 1989
SP35 May 1, 1989
SP32 April 1, 1989
SP27 March 1, 1989
SP31 March 1, 1989
SP30 March 1, 1989
SP24 March 1, 1989
SP29 February 1, 1989
SP28 January 1, 1989
