| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 85 | 1.938,51 | 22,81 | 1 |
| 2007 | 92 | 2.523,41 | 27,43 | 1 |
| 2008 | 106 | 3.057,49 | 28,84 | 1 |
| 2009 | 95 | 2.570,74 | 27,06 | 2 |
| 2010 | 134 | 3.316,60 | 24,75 | 2 |
| 2011 | 139 | 3.237,08 | 23,29 | 1 |
| 2012 | 126 | 3.090,48 | 24,53 | 2 |
| 2013 | 128 | 2.906,21 | 22,70 | 2 |
| 2014 | 105 | 2.921,77 | 27,83 | 2 |
| 2015 | 106 | 3.123,79 | 29,47 | 2 |
| 2016 | 100 | 2.941,08 | 29,41 | 2 |
| 2017 | 94 | 2.517,00 | 26,78 | 2 |
| 2018 | 79 | 2.346,33 | 29,70 | 2 |
| 2019 | 81 | 2.409,82 | 29,75 | 2 |
| 2020 | 58 | 2.057,31 | 35,47 | 2 |
| 2021 | 52 | 2.156,16 | 41,46 | 2 |
| 2022 | 50 | 2.055,89 | 41,12 | 2 |
| 2023 | 42 | 1.880,45 | 44,77 | 2 |
| 2024 | 43 | 1.647,55 | 38,32 | 2 |
| totale | 1.715 | 48.697,67 | 28,40 | 34 |