| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very common | 1169 |
53.2%
|
| 2 | Fairly common | 591 |
26.9%
|
| 3 | Fairly rare | 214 |
9.7%
|
| 4 | Very rare | 146 |
6.6%
|
| 9 | Don't know | 78 |
3.5%
|