| Value | Category | Cases | |
|---|---|---|---|
| 0 | 476 |
7.8%
|
|
| 1 | 1538 |
25.4%
|
|
| 2 | 767 |
12.6%
|
|
| 3 | 416 |
6.9%
|
|
| 4 | 4+ | 518 |
8.5%
|
| 5 | Never used | 2352 |
38.8%
|
| 9 | 12 |