| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2017 or earlier | 255 | 
                                    
                                    18.4%
                                 | 
| 2 | 2018 | 366 | 
                                    
                                    26.5%
                                 | 
| 3 | 2019 | 405 | 
                                    
                                    29.3%
                                 | 
| 4 | 2020 | 198 | 
                                    
                                    14.3%
                                 | 
| 5 | 2021 | 120 | 
                                    
                                    8.7%
                                 | 
| 6 | 2022 | 39 | 
                                    
                                    2.8%
                                 | 
| Missing value | 44 |