| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 266 | 
                                    
                                    19.3%
                                 | 
| 2 | 2018 | 368 | 
                                    
                                    26.7%
                                 | 
| 3 | 2019 | 404 | 
                                    
                                    29.3%
                                 | 
| 4 | 2020 | 200 | 
                                    
                                    14.5%
                                 | 
| 5 | 2021 | 104 | 
                                    
                                    7.6%
                                 | 
| 6 | 2022 | 35 | 
                                    
                                    2.5%
                                 | 
| Missing value | 50 |