| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 167 |
43.7%
|
| 0 | Less than one year | 6 |
1.6%
|
| 2 | 20 |
5.2%
|
|
| 3 | 23 |
6%
|
|
| 4 | 13 |
3.4%
|
|
| 5 | 55 |
14.4%
|
|
| 6 | 18 |
4.7%
|
|
| 7 | 11 |
2.9%
|
|
| 8 | 8 |
2.1%
|
|
| 9 | 3 |
0.8%
|
|
| 10 | 45 |
11.8%
|
|
| 12 | 2 |
0.5%
|
|
| 13 | 1 |
0.3%
|
|
| 15 | 3 |
0.8%
|
|
| 20 | 6 |
1.6%
|
|
| 25 | 1 |
0.3%
|
|
| 101 | .A | 1 | |
| Sysmiss | 731 |