| 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 |