| Jahr | Monat | Sichtungen |
|---|---|---|
| 2012 | 4 | 99 |
| 2012 | 3 | 154 |
| 2012 | 2 | 180 |
| 2012 | 1 | 103 |
| 2011 | 12 | 68 |
| 2011 | 11 | 42 |
| 2011 | 10 | 63 |
| 2011 | 9 | 41 |
| 2011 | 8 | 72 |
| 2011 | 7 | 129 |
| 2011 | 6 | 64 |
| 2011 | 5 | 76 |
| 2011 | 4 | 144 |
| 2011 | 3 | 121 |
| 2011 | 2 | 130 |
| 2011 | 1 | 132 |
| 2010 | 12 | 52 |
| 2010 | 11 | 3 |
| 2010 | 10 | 22 |
| 2010 | 9 | 12 |
| Average | / Monat | 85.35 |
| Total | - | 1707 |