1989
 JanFebMarAprMayJunJulAugSepOctNovDec
1 1 1 1 1 --- 1 1 --- --- --- --- ---
2 --- 1 --- --- --- --- 1 --- --- --- --- ---
3 --- 1 --- 1,2 --- --- 1 --- --- --- --- ---
4 1 1 --- --- 1 --- 1 --- --- --- --- ---
5 1 1 1 1 1 --- 1 --- --- --- --- ---
6 1 1 1 --- --- --- 1 --- --- --- --- ---
7 --- 1 1 1 1 1,2 --- --- --- --- --- ---
8 1 --- 1 --- --- --- --- --- --- --- --- ---
9 1 1 1 --- --- --- --- --- --- --- --- ---
10 --- 1 --- --- --- --- 1 --- --- --- --- ---
11 --- 1 1 1 --- 1 --- --- --- --- --- ---
12 1 1 1 1 --- --- --- --- --- --- --- ---
13 1 1 --- --- --- 1 --- --- --- --- --- ---
14 1 1 1 1,2 1 --- --- --- --- --- --- ---
15 1 --- --- --- --- --- --- --- --- --- --- ---
16 --- --- 1 --- 1 --- --- --- --- --- --- ---
17 1 1 --- --- 1 --- --- --- --- --- --- ---
18 1 1 1,2 1 --- --- --- --- --- --- --- ---
19 1 1 --- --- 1 1 --- --- --- --- --- ---
20 1 --- 1 --- --- 1 --- --- --- --- --- ---
21 --- --- --- --- 1 --- --- --- --- --- --- ---
22 1 1 1 1 1 1,2 --- --- --- --- --- ---
23 --- 1 1 --- 1 1 --- --- --- --- --- ---
24 1 1 --- 1 1 1 --- --- --- --- --- ---
25 1 1 1 1 1 1 --- --- --- --- --- ---
26 --- 1 1 --- 1 --- --- --- --- --- --- ---
27 --- --- --- 1 --- --- --- --- --- --- --- ---
28 1 --- 1 1 1 --- --- --- --- --- --- ---
29 1   1,2 --- 1,2 --- --- --- --- --- --- ---
30 1   --- 1 1 --- --- --- --- --- --- ---
31 ---   1   ---   --- ---   ---   ---