| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 1 |
1.7%
|
| -8 | Refused | 0 |
0%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 1 |
1.7%
|
| 1 | Less than 1 year | 4 |
6.8%
|
| 2 | 6 |
10.2%
|
|
| 3 | 3 |
5.1%
|
|
| 4 | 7 |
11.9%
|
|
| 5 | 8 |
13.6%
|
|
| 6 | 3 |
5.1%
|
|
| 7 | 6 |
10.2%
|
|
| 8 | 3 |
5.1%
|
|
| 9 | 1 |
1.7%
|
|
| 10 | 2 |
3.4%
|
|
| 11 | 1 |
1.7%
|
|
| 12 | 4 |
6.8%
|
|
| 13 | 1 |
1.7%
|
|
| 15 | 1 |
1.7%
|
|
| 18 | 1 |
1.7%
|
|
| 20 | 1 |
1.7%
|
|
| 21 | 1 |
1.7%
|
|
| 22 | 1 |
1.7%
|
|
| 29 | 1 |
1.7%
|
|
| 30 | 1 |
1.7%
|
|
| 50 | 1 |
1.7%
|
|
| Sysmiss | 940 |