| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2020 | 139 | 13 | 2 | 184 |
| 2019 | 198 | 8 | 3 | 440 |
| 2018 | 140 | 7 | 5 | 243 |
| 2017 | 115 | 6 | 4 | 207 |
| 2016 | 245 | 12 | 4 | 745 |
| 2015 | 291 | 23 | 7 | 1508 |
| 2014 | 345 | 14 | 2 | 2149 |
| 2013 | 340 | 14 | 3 | 1946 |
| 2012 | 215 | 12 | 4 | 590 |
| 2011 | 245 | 19 | 6 | 649 |
| 2010 | 388 | 22 | 3 | 2005 |
| 2009 | 299 | 15 | 2 | 1178 |
| 2008 | 290 | 8 | 1 | 376 |
| 2007 | 51 | 7 | 2 | 51 |
| 2006 | 82 | 8 | 2 | 86 |
| 2005 | 27 | 4 | 1 | 27 |
| 2004 | 14 | 2 | 1 | 14 |
| 2003 | 1 | 1 | 1 | 1 |
| 1991 | 1 | 1 | 1 | 1 |
| 1990 | 1 | 1 | 1 | 1 |
| Totalt alle år | 726 | 76 | 17 | 12401 |