| Value | Category | Cases | |
|---|---|---|---|
| 1 | None | 23687 |
5.9%
|
| 2 | One | 40417 |
10.1%
|
| 3 | Two | 57940 |
14.5%
|
| 4 | Three or more | 270835 |
67.9%
|
| 7 | N/A | 1848 |
0.5%
|
| 8 | Invalid | 941 |
0.2%
|
| 9 | Missing | 3082 |
0.8%
|