| 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
|---|---|---|---|---|---|---|---|
| Piedmont | 1 881 | 1 891 | 1 888 | 1 898 | 1 898 | 1 898 | 1 897 |
| Calabria | 849 | 851 | 851 | 851 | 852 | 852 | 852 |
| Campania | 1 066 | 1 108 | 1 121 | 1 121 | 1 130 | 1 099 | 1 095 |
| Lombardy | 1 569 | 1 681 | 1 677 | 1 677 | 1 677 | 1 677 | 1 677 |
| Liguria | 501 | 500 | 498 | 498 | 498 | 499 | 499 |
| Basilicata | 362 | 363 | 347 | 347 | 347 | 347 | 347 |
| Sicily | 1 380 | 1 378 | 1 379 | 1 379 | 1 379 | 1 379 | 1 379 |
| Sardinia | 427 | 429 | 430 | 430 | 429 | 429 | 429 |
| Abruzzo | 511 | 511 | 524 | 524 | 525 | 525 | 524 |
| Molise | 270 | 270 | 265 | 265 | 265 | 265 | 265 |
| Apulia | 822 | 828 | 838 | 838 | 838 | 838 | 840 |
| Aosta Valley | 81 | 81 | 81 | 81 | 81 | 81 | 81 |