| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mostly announced | 319 | 
                                    
                                    31.9%
                                 | 
| 2 | Mostly unannounced | 591 | 
                                    
                                    59.1%
                                 | 
| 3 | Don't know | 90 | 
                                    
                                    9%
                                 |