piemonte, liguria, valled'aosta | 8% | [ 4 ] | |
lombardia | 2% | [ 1 ] | |
veneto, trentino, friuli | 18% | [ 9 ] | |
emilia romagna | 10% | [ 5 ] | |
toscana | 25% | [ 12 ] | |
lazio | 6% | [ 3 ] | |
Marche, Umbria, Abruzzo, Molise | 4% | [ 2 ] | |
campania | 4% | [ 2 ] | |
Puglia, Basilicata, Calabria | 4% | [ 2 ] | |
sicilia, sardegna | 16% | [ 8 ] |