| Jahr | Monat | Sichtungen |
|---|---|---|
| 2022 | 10 | 1 |
| 2021 | 8 | 1 |
| 2021 | 4 | 1 |
| 2020 | 11 | 2 |
| 2020 | 10 | 4 |
| 2020 | 8 | 2 |
| 2020 | 4 | 2 |
| 2020 | 3 | 3 |
| 2020 | 2 | 2 |
| 2020 | 1 | 1 |
| 2019 | 12 | 7 |
| 2019 | 11 | 1 |
| 2019 | 10 | 3 |
| 2019 | 9 | 2 |
| 2019 | 8 | 3 |
| 2019 | 2 | 1 |
| 2018 | 10 | 3 |
| 2018 | 9 | 8 
|
| 2018 | 8 | 1 |
| 2018 | 7 | 1 |
| 2018 | 6 | 1 |
| 2018 | 5 | 2 |
| 2018 | 4 | 1 |
| 2016 | 8 | 3 |
| 2014 | 10 | 1 |
| Durchschnitt | 2 | |
| Total | 57 | |