| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Never | 278 | 894409 |
2.8%
|
| 2 | 1-3 times | 6815 | 19985238 |
62.9%
|
| 3 | 3+ times | 3810 | 10833217 |
34.1%
|
| 99 | Not stated | 13 | 55053 |
0.2%
|