| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 85 | 1.245,33 | 14,65 | 1 |
| 2007 | 156 | 3.488,04 | 22,36 | 1 |
| 2008 | 160 | 3.531,75 | 22,07 | 2 |
| 2009 | 126 | 3.168,49 | 25,15 | 3 |
| 2010 | 57 | 1.136,10 | 19,93 | 2 |
| 2011 | 79 | 1.957,63 | 24,78 | 1 |
| 2012 | 41 | 899,55 | 21,94 | 2 |
| 2013 | 43 | 855,38 | 19,89 | 2 |
| 2014 | 46 | 1.248,66 | 27,14 | 2 |
| 2015 | 40 | 890,46 | 22,26 | 2 |
| 2016 | 45 | 975,05 | 21,67 | 2 |
| 2017 | 41 | 988,93 | 24,12 | 2 |
| 2018 | 27 | 587,32 | 21,75 | 2 |
| 2019 | 34 | 899,13 | 26,45 | 2 |
| 2020 | 27 | 647,00 | 23,96 | 2 |
| 2021 | 25 | 698,72 | 27,95 | 2 |
| 2022 | 24 | 727,87 | 30,33 | 2 |
| 2023 | 17 | 345,82 | 20,34 | 3 |
| 2024 | 19 | 483,12 | 25,43 | 3 |
| totale | 1.092 | 24.774,35 | 22,69 | 38 |