Value | Category |
---|---|
-9 | Don't know (spontaneous) |
-7 | Never regiestered (spontaneous) |
1 | One year or less |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | |
14 | |
15 | |
16 | |
17 | |
18 | |
19 | |
20 | |
21 | |
22 | |
23 | |
24 | |
25 | |
26 | |
27 | |
28 | |
30 | |
31 | |
32 | |
33 | |
34 | |
35 | |
36 | |
37 | |
38 | |
40 | |
42 | |
43 | |
45 | |
48 | |
50 | |
53 | |
67 |