| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 109 | 2.908,71 | 26,69 | 2 |
| 2007 | 113 | 2.638,02 | 23,35 | 2 |
| 2008 | 94 | 1.803,63 | 19,19 | 1 |
| 2009 | 176 | 3.767,17 | 21,40 | 3 |
| 2010 | 128 | 1.932,42 | 15,10 | 2 |
| 2011 | 49 | 1.051,99 | 21,47 | 1 |
| 2012 | 46 | 821,38 | 17,86 | 1 |
| 2013 | 32 | 589,51 | 18,42 | 1 |
| 2014 | 31 | 681,75 | 21,99 | 1 |
| 2015 | 30 | 558,79 | 18,63 | 1 |
| 2016 | 28 | 633,52 | 22,63 | 1 |
| 2017 | 31 | 600,84 | 19,38 | 1 |
| 2018 | 30 | 633,43 | 21,11 | 1 |
| 2019 | 26 | 579,40 | 22,28 | 1 |
| 2020 | 25 | 422,97 | 16,92 | 1 |
| 2021 | 26 | 645,20 | 24,82 | 1 |
| 2022 | 21 | 501,40 | 23,88 | 1 |
| 2023 | 14 | 282,66 | 20,19 | 1 |
| 2024 | 20 | 593,01 | 29,65 | 2 |
| totale | 1.029 | 21.645,80 | 21,04 | 25 |