| Anno di imposta | Oneri deducibili | Reddito imponibile | ||
|---|---|---|---|---|
| Frequenza | Ammontare | Frequenza | Ammontare | |
| 2022 | 7.263.353 | 27.948.003 | 40.083.341 | 914.153.290 |
| 2021 | 7.106.515 | 25.153.745 | 39.532.893 | 860.860.377 |
| 2020 | 7.019.980 | 24.874.409 | 39.097.800 | 815.214.669 |
| 2019 | 6.959.471 | 25.691.705 | 39.715.070 | 833.645.714 |
| 2018 | 7.351.998 | 26.723.632 | 39.880.700 | 829.463.901 |
| 2017 | 7.361.707 | 26.586.746 | 39.484.627 | 803.597.294 |
| 2016 | 7.274.749 | 26.325.682 | 39.457.256 | 797.504.979 |
| 2015 | 7.343.167 | 25.466.367 | 39.477.883 | 790.141.816 |
| 2014 | 7.390.028 | 24.795.601 | 39.430.187 | 777.511.772 |
| 2013 | 10.077.027 | 24.258.305 | 39.706.498 | 777.118.247 |
| 2012 | 10.349.682 | 23.962.225 | 40.062.256 | 773.562.156 |
| 2011 | 13.597.549 | 22.400.416 | 40.267.013 | 772.219.281 |
| 2010 | 13.373.548 | 21.745.685 | 39.894.421 | 762.184.577 |
| 2009 | 12.907.578 | 21.548.037 | 39.885.732 | 753.943.616 |
| 2008 | 12.687.840 | 21.721.425 | 40.249.514 | 753.556.569 |
| 2007 | 12.712.734 | 21.271.380 | 40.415.884 | 741.433.402 |
