Localities: Porsgrunn
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 5 | 3 | 1 | 5 |
| 2023 | 7 | 2 | 1 | 7 |
| 2022 | 5 | 2 | 1 | 5 |
| 2021 | 5 | 2 | 1 | 5 |
| 2020 | 5 | 2 | 1 | 5 |
| 2019 | 6 | 2 | 1 | 6 |
| 2018 | 7 | 4 | 2 | 7 |
| 2017 | 5 | 2 | 1 | 5 |
| 2016 | 8 | 5 | 1 | 8 |
| 2015 | 9 | 6 | 3 | 18 |
| 2014 | 16 | 8 | 3 | 25 |
| 2013 | 14 | 3 | 3 | 19 |
| 2012 | 1 | 1 | 1 | 1 |
| 2011 | 8 | 7 | 5 | 10 |
| 2010 | 4 | 4 | 4 | 5 |
| 2009 | 1 | 1 | 1 | 1 |
| Totalt alle år | 41 | 26 | 9 | 132 |