| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 106 | 1.256,24 | 11,85 | 2 |
| 2007 | 34 | 784,13 | 23,06 | 1 |
| 2008 | 33 | 719,21 | 21,79 | 1 |
| 2009 | 40 | 1.027,39 | 25,68 | 2 |
| 2010 | 37 | 519,67 | 14,05 | 2 |
| 2011 | 29 | 444,12 | 15,31 | 1 |
| 2012 | 31 | 439,00 | 14,16 | 2 |
| 2013 | 22 | 381,14 | 17,32 | 2 |
| 2014 | 25 | 341,18 | 13,65 | 2 |
| 2015 | 38 | 573,38 | 15,09 | 2 |
| 2016 | 11 | 207,72 | 18,88 | 2 |
| 2017 | 26 | 396,01 | 15,23 | 2 |
| 2018 | 20 | 254,52 | 12,73 | 2 |
| 2019 | 36 | 507,53 | 14,10 | 2 |
| 2020 | 35 | 542,41 | 15,50 | 2 |
| 2021 | 33 | 620,00 | 18,79 | 2 |
| 2022 | 36 | 635,97 | 17,67 | 2 |
| 2023 | 37 | 637,80 | 17,24 | 2 |
| 2024 | 35 | 644,65 | 18,42 | 2 |
| totale | 664 | 10.932,07 | 16,46 | 35 |