Location: Presthammer
| Year | Arter/grupper | Participants | Observations |
|---|---|---|---|
| 1990 | 1 | 1 | 1 |
| 1991 | 1 | 1 | 1 |
| 2004 | 13 | 1 | 13 |
| 2005 | 24 | 1 | 24 |
| 2006 | 74 | 1 | 77 |
| 2007 | 45 | 1 | 45 |
| 2008 | 260 | 1 | 321 |
| 2009 | 269 | 1 | 1063 |
| 2010 | 273 | 1 | 1626 |
| 2011 | 109 | 1 | 341 |
| 2012 | 133 | 1 | 395 |
| 2013 | 194 | 1 | 1093 |
| 2014 | 234 | 1 | 1161 |
| 2015 | 101 | 1 | 323 |
| 2016 | 134 | 1 | 377 |
| 2017 | 101 | 1 | 182 |
| 2018 | 59 | 1 | 95 |
| 2019 | 163 | 1 | 353 |
| 2020 | 86 | 1 | 114 |
| 2021 | 67 | 1 | 79 |
| 2022 | 59 | 1 | 79 |
| 2023 | 180 | 1 | 464 |
| 2024 | 17 | 1 | 20 |
| Totalt alle år | 614 | 1 | 8247 |