| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 29 | 481,40 | 16,60 | 1 |
| 2007 | 447 | 9.866,47 | 22,07 | 1 |
| 2008 | 308 | 8.026,61 | 26,06 | 1 |
| 2009 | 261 | 7.134,16 | 27,33 | 2 |
| 2010 | 207 | 5.049,17 | 24,39 | 2 |
| 2011 | 162 | 3.550,87 | 21,92 | 1 |
| 2012 | 128 | 3.273,02 | 25,57 | 2 |
| 2013 | 29 | 385,45 | 13,29 | 2 |
| 2014 | 119 | 3.090,06 | 25,97 | 3 |
| 2015 | 100 | 2.766,37 | 27,66 | 2 |
| 2016 | 106 | 2.760,50 | 26,04 | 3 |
| 2017 | 98 | 2.834,45 | 28,92 | 3 |
| 2018 | 84 | 2.447,22 | 29,13 | 3 |
| 2019 | 75 | 2.516,01 | 33,55 | 3 |
| 2020 | 62 | 2.195,59 | 35,41 | 3 |
| 2021 | 53 | 1.512,65 | 28,54 | 3 |
| 2022 | 45 | 1.468,86 | 32,64 | 3 |
| 2023 | 15 | 350,25 | 23,35 | 2 |
| 2024 | 27 | 597,37 | 22,12 | 2 |
| totale | 2.355 | 60.306,48 | 25,61 | 42 |