| Jahr | Monat | Sichtungen |
|---|---|---|
| 2023 | 7 | 1 |
| 2023 | 6 | 1 |
| 2023 | 5 | 2 |
| 2022 | 9 | 1 |
| 2022 | 2 | 2 |
| 2021 | 9 | 1 |
| 2021 | 7 | 1 |
| 2021 | 6 | 1 |
| 2021 | 3 | 1 |
| 2020 | 12 | 3 |
| 2020 | 11 | 1 |
| 2020 | 8 | 1 |
| 2019 | 12 | 1 |
| 2019 | 8 | 1 |
| 2019 | 5 | 1 |
| 2019 | 2 | 1 |
| 2014 | 6 | 2 |
| 2014 | 5 | 1 |
| 2014 | 4 | 17 |
| 2013 | 11 | 4 |
| 2013 | 10 | 5 |
| 2013 | 7 | 109 |
| 2013 | 6 | 338 |
| 2013 | 5 | 1590 |
| 2013 | 4 | 3 |
| 2013 | 3 | 2 |
| 2013 | 2 | 18 |
| 2013 | 1 | 15 |
| 2012 | 12 | 10 |
| 2012 | 11 | 28 |
| 2012 | 10 | 119 |
| 2012 | 9 | 6 |
| 2012 | 8 | 19 |
| 2012 | 7 | 28 |
| 2012 | 6 | 23 |
| 2012 | 5 | 18 |
| 2012 | 4 | 17 |
| 2012 | 3 | 1713 |
| 2012 | 2 | 753 |
| 2012 | 1 | 445 |
| 2011 | 12 | 2097 
|
| Durchschnitt | 180 | |
| Total | 7400 | |
