| Anno | Firme | Importi | Media | Enti |
|---|---|---|---|---|
| 2006 | 134 | 4.421,94 | 33,00 | 3 |
| 2007 | 78 | 3.277,80 | 42,02 | 2 |
| 2008 | 71 | 4.505,44 | 63,46 | 2 |
| 2009 | 84 | 3.109,70 | 37,02 | 3 |
| 2010 | 87 | 2.416,73 | 27,78 | 3 |
| 2011 | 73 | 2.792,44 | 38,25 | 2 |
| 2012 | 91 | 2.950,68 | 32,43 | 3 |
| 2013 | 92 | 3.271,61 | 35,56 | 3 |
| 2014 | 93 | 4.389,93 | 47,20 | 3 |
| 2015 | 88 | 3.547,07 | 40,31 | 3 |
| 2016 | 102 | 3.897,12 | 38,21 | 3 |
| 2017 | 101 | 4.397,39 | 43,54 | 3 |
| 2018 | 107 | 4.971,89 | 46,47 | 3 |
| 2019 | 96 | 4.835,62 | 50,37 | 3 |
| 2020 | 93 | 5.123,70 | 55,09 | 3 |
| 2021 | 90 | 4.334,54 | 48,16 | 3 |
| 2022 | 12 | 489,26 | 40,77 | 1 |
| totale | 1.492 | 62.732,86 | 42,05 | 46 |