| Month/Year | 2023 | 2021 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
| January | 17 | 13 | 17 | 11 | 6 | 13 | 10 | 12 |
| February | 14 | 17 | 13 | 14 | 13 | 21 | 14 | 15 |
| March | 20 | 17 | 19 | 10 | 14 | 28 | 21 | 19 |
| April | 16 | 18 | 9 | 12 | 16 | 17 | 18 | 18 |
| May | 18 | 20 | 10 | 17 | 20 | 12 | 23 | |
| June | 16 | 28 | 20 | 15 | 10 | 16 | 23 | |
| July | 12 | 31 | 21 | 25 | 30 | 16 | 25 | |
| August | 16 | 30 | 15 | 12 | 32 | 19 | 20 | |
| September | 28 | 28 | 14 | 14 | 7 | 18 | 17 | |
| October | 20 | 16 | 12 | 22 | 6 | 15 | 20 | |
| November | 12 | 19 | 20 | 17 | 15 | 12 | 19 | |
| December | 17 | 18 | 10 | 15 | 19 | 12 | 19 | |
| Total | 67 | 204 | 248 | 169 | 186 | 218 | 183 | 230 |
