| Value | Category | Cases | |
|---|---|---|---|
| 0 | 18721 |
48.4%
|
|
| 1 | 8617 |
22.3%
|
|
| 2 | 2236 |
5.8%
|
|
| 3 | 962 |
2.5%
|
|
| 4 | 4+ | 884 |
2.3%
|
| 5 | never used | 7298 |
18.8%
|