Localities: Akershus
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2022 | 31 | 15 | 11 | 45 |
| 2024 | 6 | 4 | 4 | 10 |
| 2023 | 24 | 11 | 8 | 37 |
| 2021 | 32 | 14 | 10 | 38 |
| 2002 | 1 | 1 | 1 | 1 |
| 2020 | 74 | 24 | 17 | 120 |
| 2017 | 200 | 24 | 16 | 347 |
| 2003 | 3 | 2 | 2 | 3 |
| 2004 | 1 | 1 | 1 | 2 |
| 2005 | 5 | 2 | 2 | 6 |
| 2018 | 164 | 24 | 15 | 259 |
| 2016 | 266 | 28 | 16 | 529 |
| 2006 | 19 | 6 | 3 | 24 |
| 2007 | 124 | 14 | 9 | 169 |
| 2019 | 105 | 19 | 12 | 178 |
| 2011 | 618 | 34 | 20 | 3806 |
| 2008 | 62 | 7 | 7 | 105 |
| 2012 | 325 | 18 | 9 | 1194 |
| 2009 | 20 | 12 | 8 | 33 |
| 2013 | 248 | 17 | 7 | 832 |
| 2010 | 65 | 14 | 9 | 88 |
| 2014 | 168 | 32 | 20 | 586 |
| 2015 | 149 | 19 | 11 | 422 |
| Totalt alle år | 836 | 173 | 98 | 8834 |