| Jahr | Monat | Sichtungen |
|---|---|---|
| 2023 | 11 | 1 |
| 2023 | 4 | 1 |
| 2022 | 8 | 2 |
| 2022 | 7 | 1 |
| 2022 | 6 | 11 |
| 2022 | 5 | 1 |
| 2022 | 2 | 1 |
| 2021 | 6 | 1 |
| 2021 | 2 | 1 |
| 2020 | 12 | 1 |
| 2020 | 11 | 2 |
| 2020 | 10 | 2 |
| 2020 | 7 | 2 |
| 2020 | 6 | 3 |
| 2020 | 5 | 9 |
| 2020 | 4 | 5 |
| 2019 | 5 | 1 |
| 2016 | 8 | 2 |
| 2016 | 7 | 1 |
| 2016 | 3 | 7 |
| 2015 | 11 | 1 |
| 2014 | 1 | 3 |
| 2013 | 10 | 5 |
| 2013 | 5 | 2 |
| 2013 | 4 | 4 |
| 2013 | 3 | 18 
|
| 2013 | 2 | 2 |
| 2013 | 1 | 3 |
| 2012 | 11 | 1 |
| 2012 | 10 | 7 |
| 2012 | 9 | 10 |
| Durchschnitt | 4 | |
| Total | 111 | |