| Jahr | Monat | Sichtungen |
|---|---|---|
| 2024 | 12 | 8 |
| 2024 | 4 | 2 |
| 2024 | 3 | 15 |
| 2024 | 2 | 1 |
| 2023 | 2 | 1 |
| 2022 | 10 | 1 |
| 2021 | 5 | 2 |
| 2021 | 2 | 1 |
| 2020 | 12 | 5 |
| 2020 | 11 | 2 |
| 2020 | 10 | 2 |
| 2020 | 8 | 4 |
| 2020 | 7 | 2 |
| 2020 | 6 | 4 |
| 2020 | 5 | 3 |
| 2020 | 4 | 8 |
| 2020 | 2 | 2 |
| 2020 | 1 | 6 |
| 2019 | 12 | 3 |
| 2019 | 11 | 7 |
| 2019 | 10 | 3 |
| 2019 | 8 | 1 |
| 2019 | 7 | 3 |
| 2019 | 6 | 6 |
| 2019 | 5 | 2 |
| 2019 | 2 | 20 |
| 2019 | 1 | 106 |
| 2018 | 12 | 3 |
| 2018 | 11 | 16 |
| 2018 | 10 | 5 |
| 2018 | 8 | 6 |
| 2018 | 7 | 1 |
| 2018 | 6 | 1 |
| 2018 | 4 | 7 |
| 2018 | 3 | 13 |
| 2018 | 1 | 3 |
| 2017 | 12 | 10 |
| 2017 | 11 | 2 |
| 2017 | 8 | 3 |
| 2017 | 7 | 1 |
| 2017 | 6 | 1 |
| 2017 | 5 | 4 |
| 2017 | 3 | 11 |
| 2017 | 2 | 3 |
| 2017 | 1 | 2 |
| 2016 | 11 | 2 |
| 2016 | 10 | 3 |
| 2016 | 8 | 3 |
| 2016 | 5 | 1 |
| 2016 | 3 | 11 |
| 2016 | 2 | 1 |
| 2016 | 1 | 11 |
| 2015 | 12 | 2 |
| 2015 | 11 | 6 |
| 2015 | 10 | 2 |
| 2015 | 9 | 18 |
| 2015 | 8 | 1 |
| 2015 | 7 | 5 |
| 2015 | 6 | 10 |
| 2015 | 5 | 34 |
| 2015 | 4 | 2 |
| 2015 | 3 | 6 |
| 2015 | 1 | 10 |
| 2014 | 12 | 4 |
| 2014 | 11 | 5 |
| 2014 | 10 | 4 |
| 2014 | 9 | 13 |
| 2014 | 8 | 12 |
| 2014 | 7 | 5 |
| 2014 | 6 | 11 |
| 2014 | 5 | 15 |
| 2014 | 4 | 13 |
| 2014 | 3 | 22 |
| 2014 | 2 | 3 |
| 2014 | 1 | 19 |
| 2013 | 12 | 4 |
| 2013 | 11 | 30 |
| 2013 | 10 | 49 |
| 2013 | 9 | 17 |
| 2013 | 8 | 29 |
| 2013 | 7 | 23 |
| 2013 | 6 | 44 |
| 2013 | 5 | 36 |
| 2013 | 4 | 17 |
| 2013 | 3 | 33 |
| 2013 | 2 | 23 |
| 2013 | 1 | 58 |
| 2012 | 12 | 42 |
| 2012 | 11 | 87 |
| 2012 | 10 | 68 |
| 2012 | 9 | 96 |
| 2012 | 8 | 34 |
| 2012 | 7 | 37 |
| 2012 | 6 | 60 |
| 2012 | 5 | 148 |
| 2012 | 4 | 133 |
| 2012 | 3 | 155 |
| 2012 | 2 | 184 
|
| 2012 | 1 | 103 |
| 2011 | 12 | 69 |
| 2011 | 11 | 43 |
| 2011 | 10 | 64 |
| 2011 | 9 | 41 |
| 2011 | 8 | 72 |
| 2011 | 7 | 131 |
| 2011 | 6 | 65 |
| 2011 | 5 | 77 |
| 2011 | 4 | 145 |
| 2011 | 3 | 121 |
| 2011 | 2 | 130 |
| 2011 | 1 | 132 |
| 2010 | 12 | 53 |
| 2010 | 11 | 3 |
| 2010 | 10 | 22 |
| 2010 | 9 | 14 |
| Durchschnitt | 28 | |
| Total | 3258 | |