| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 161 | 2.659,92 | 16,52 | 3 |
| 2007 | 128 | 2.213,32 | 17,29 | 2 |
| 2008 | 101 | 2.913,56 | 28,85 | 2 |
| 2009 | 206 | 4.892,22 | 23,75 | 3 |
| 2010 | 141 | 2.142,61 | 15,20 | 3 |
| 2011 | 142 | 1.991,15 | 14,02 | 2 |
| 2012 | 151 | 2.302,44 | 15,25 | 3 |
| 2013 | 128 | 1.745,90 | 13,64 | 3 |
| 2014 | 116 | 2.144,34 | 18,49 | 3 |
| 2015 | 112 | 1.980,21 | 17,68 | 3 |
| 2016 | 112 | 2.198,81 | 19,63 | 3 |
| 2017 | 92 | 2.188,20 | 23,78 | 3 |
| 2018 | 66 | 1.493,38 | 22,63 | 3 |
| 2019 | 58 | 1.362,77 | 23,50 | 3 |
| 2020 | 59 | 1.278,04 | 21,66 | 3 |
| 2021 | 28 | 746,76 | 26,67 | 2 |
| 2022 | 22 | 488,58 | 22,21 | 2 |
| 2023 | 22 | 474,89 | 21,59 | 3 |
| 2024 | 18 | 387,95 | 21,55 | 3 |
| totale | 1.863 | 35.605,05 | 19,11 | 52 |