| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -8 | Refusal (spontaneous) | 3 |
1.1%
|
| 1 | One year or less | 15 |
5.3%
|
| 2 | 8 |
2.8%
|
|
| 3 | 12 |
4.3%
|
|
| 4 | 9 |
3.2%
|
|
| 5 | 18 |
6.4%
|
|
| 6 | 11 |
3.9%
|
|
| 7 | 3 |
1.1%
|
|
| 8 | 7 |
2.5%
|
|
| 9 | 11 |
3.9%
|
|
| 10 | 23 |
8.2%
|
|
| 11 | 10 |
3.5%
|
|
| 12 | 14 |
5%
|
|
| 13 | 7 |
2.5%
|
|
| 14 | 10 |
3.5%
|
|
| 15 | 14 |
5%
|
|
| 16 | 10 |
3.5%
|
|
| 17 | 6 |
2.1%
|
|
| 18 | 15 |
5.3%
|
|
| 19 | 7 |
2.5%
|
|
| 20 | 8 |
2.8%
|
|
| 21 | 1 |
0.4%
|
|
| 22 | 5 |
1.8%
|
|
| 23 | 5 |
1.8%
|
|
| 24 | 6 |
2.1%
|
|
| 25 | 13 |
4.6%
|
|
| 26 | 16 |
5.7%
|
|
| 27 | 9 |
3.2%
|
|
| 28 | 6 |
2.1%
|
|
| Sysmiss | 77 |