| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1. Never | 4936 |
60%
|
| 1 | 2. Once | 1267 |
15.4%
|
| 2 | 3. A few times | 1040 |
12.6%
|
| 3 | 4. Many times | 453 |
5.5%
|
| 98 | 5. Don't know | 0 |
0%
|
| 99 | 6. Refused | 0 |
0%
|
| c | 382 |
4.6%
|
|
| d | 145 |
1.8%
|