| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 49743 |
10.6%
|
| 2 | One | 218974 |
46.6%
|
| 3 | Two | 141141 |
30.1%
|
| 4 | Three or more | 59785 |
12.7%
|
| 7 | N/A | 8557 | |
| 8 | Invalid | 599 | |
| 9 | Missing | 6691 |