| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 82700 |
20.7%
|
| 2 | One | 138773 |
34.8%
|
| 3 | Two | 114276 |
28.7%
|
| 4 | Three or more | 53178 |
13.3%
|
| 7 | N/A | 1841 |
0.5%
|
| 8 | Invalid | 927 |
0.2%
|
| 9 | Missing | 7055 |
1.8%
|