| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 57 | 882,97 | 15,49 | 3 |
| 2007 | 9 | 202,78 | 22,53 | 2 |
| 2008 | 10 | 151,89 | 15,19 | 2 |
| 2009 | 20 | 217,80 | 10,89 | 3 |
| 2010 | 31 | 570,46 | 18,40 | 3 |
| 2011 | 19 | 290,32 | 15,28 | 2 |
| 2012 | 26 | 428,63 | 16,49 | 3 |
| 2013 | 27 | 406,18 | 15,04 | 3 |
| 2014 | 21 | 576,81 | 27,47 | 3 |
| 2015 | 18 | 403,56 | 22,42 | 3 |
| 2016 | 16 | 514,41 | 32,15 | 3 |
| 2017 | 28 | 799,49 | 28,55 | 3 |
| 2018 | 27 | 758,42 | 28,09 | 3 |
| 2019 | 27 | 644,61 | 23,87 | 3 |
| 2020 | 22 | 573,90 | 26,09 | 3 |
| 2021 | 29 | 664,25 | 22,91 | 3 |
| 2022 | 29 | 649,09 | 22,38 | 4 |
| 2023 | 26 | 595,67 | 22,91 | 4 |
| 2024 | 28 | 624,66 | 22,31 | 5 |
| totale | 470 | 9.955,90 | 21,18 | 58 |