Localities: Østfold
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2025 | 4 | 3 | 3 | 4 |
| 2024 | 3 | 4 | 4 | 5 |
| 2023 | 5 | 5 | 5 | 5 |
| 2022 | 17 | 6 | 5 | 18 |
| 2021 | 29 | 2 | 2 | 29 |
| 2020 | 49 | 14 | 8 | 73 |
| 2019 | 686 | 19 | 8 | 3909 |
| 2018 | 666 | 16 | 7 | 3082 |
| 2017 | 609 | 18 | 7 | 2817 |
| 2016 | 585 | 18 | 10 | 2405 |
| 2015 | 475 | 20 | 7 | 1966 |
| 2014 | 457 | 23 | 11 | 1714 |
| 2013 | 296 | 15 | 10 | 914 |
| 2012 | 159 | 12 | 7 | 383 |
| 2011 | 95 | 9 | 6 | 206 |
| 2010 | 126 | 7 | 6 | 206 |
| 2009 | 209 | 5 | 4 | 622 |
| 2008 | 4 | 4 | 3 | 5 |
| 2007 | 1 | 1 | 1 | 1 |
| 2006 | 3 | 1 | 1 | 3 |
| 2005 | 2 | 1 | 1 | 2 |
| Totalt alle år | 1012 | 104 | 50 | 18369 |