Date Span
31 Jan 1990
1
1 Feb 1983
1
10 Dec 1986
1
10 Nov 1981
1
10 Nov 1988
1
11 Nov 1988
1
13 Dec 1982
1
13 Nov 1986
1
13 Nov 1990
1
14 Jun 1986
1
15 Dec 1982
1
15 Oct 1987
1
16 Dec 1986
1
16 Nov 1983
1
17 Nov 1982
1
18 Apr 1988
1
18 Jul 1984
1
19 Jan 1989
1
2 Jul 1990
1
20 Jan 1987
1
20 Jul 1983
1
21 Apr 1983
1
21 Feb 1984
1
21 Oct 1981
1
22 Mar 1987
1
24 May 1984
1
24 Sep 1983
1
24 Sep 1989
1
26 Apr 1987
1
26 Feb 1985
1
26 Oct 1981
1
26 Sep 1986
1
28 Jan 1983
1
28 Mar 1987
1
28 May 1985
1
28 Nov 1984
1
28 Sep 1986
1
30 Jan 1990
1
30 Mar 1990
1
30 Oct 1983
1
4 May 1981
1
4 Nov 1982
1
5 Jun 1986
1
7 Apr 1983
1
7 Mar 1984
1
8 Feb 1988
1
9 Mar 1984
1
9 Mar 1987
1
Sep 1974-Nov 1979
1
n.d.
1