| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Never | 2695 | 7516953 |
23.7%
|
| 2 | 1-3 times | 5895 | 17627700 |
55.5%
|
| 3 | 3+ times | 2313 | 6568211 |
20.7%
|
| 99 | Not stated | 13 | 55053 |
0.2%
|