Localities: Lillestrøm
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2023 | 17 | 4 | 2 | 21 |
| 2022 | 18 | 4 | 2 | 23 |
| 2021 | 17 | 4 | 1 | 18 |
| 2020 | 32 | 6 | 3 | 42 |
| 2019 | 40 | 7 | 2 | 91 |
| 2018 | 35 | 4 | 1 | 76 |
| 2017 | 45 | 6 | 3 | 82 |
| 2016 | 59 | 6 | 1 | 208 |
| 2015 | 64 | 8 | 4 | 213 |
| 2014 | 74 | 8 | 2 | 350 |
| 2013 | 93 | 6 | 1 | 337 |
| 2012 | 79 | 12 | 4 | 300 |
| 2011 | 57 | 9 | 3 | 115 |
| 2010 | 13 | 5 | 2 | 16 |
| 2009 | 4 | 4 | 3 | 5 |
| 2008 | 2 | 1 | 1 | 2 |
| 2007 | 2 | 1 | 1 | 3 |
| 2005 | 2 | 1 | 1 | 2 |
| 2003 | 2 | 1 | 1 | 2 |
| Totalt alle år | 185 | 23 | 10 | 1906 |