| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never | 43484 |
91.6%
|
| 2 | Once | 626 |
1.3%
|
| 3 | Twice | 219 |
0.5%
|
| 4 | 3 or 4 times | 108 |
0.2%
|
| 5 | 5 times or more | 101 |
0.2%
|
| 6 | No experience | 2936 |
6.2%
|
| 2147483623 | Refused | 0 |
0%
|
| 2147483624 | Don't know | 0 |
0%
|
| 2147483625 | No answer | 0 |
0%
|
| 11 | .D | 1592 |