| Value | Category | Cases | |
|---|---|---|---|
| 1 | Many times | 153386 |
32.9%
|
| 2 | Two or three times | 142835 |
30.6%
|
| 3 | Once | 94907 |
20.4%
|
| 4 | Not at all | 75196 |
16.1%
|
| 7 | N/A | 561 | |
| 8 | Invalid | 2962 | |
| 9 | Miss | 46111 |