| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply | 0 |
0%
|
| 0 | Less than one year | 0 |
0%
|
| 1 | 49 |
50.5%
|
|
| 2 | 10 |
10.3%
|
|
| 3 | 10 |
10.3%
|
|
| 4 | 5 |
5.2%
|
|
| 5 | 5 |
5.2%
|
|
| 6 | 5 |
5.2%
|
|
| 7 | 3 |
3.1%
|
|
| 8 | 1 |
1%
|
|
| 9 | 1 |
1%
|
|
| 10 | 2 |
2.1%
|
|
| 11 | 1 |
1%
|
|
| 12 | 1 |
1%
|
|
| 14 | 1 |
1%
|
|
| 15 | 1 |
1%
|
|
| 22 | 1 |
1%
|
|
| 2005 | 1 |
1%
|