| Anno | Mese | Valore | Data | Anno di riferimento. |
|---|---|---|---|---|
| 2020 | GEN | 18,587 | 31/01/2020 | 2020 |
| 2020 | FEB | 18,264 | 29/02/2020 | 2020 |
| 2020 | MAR | 17,047 | 31/03/2020 | 2020 |
| 2020 | APR | 17,590 | 30/04/2020 | 2020 |
| 2020 | MAG | 17,825 | 31/05/2020 | 2020 |
| 2020 | JUN | 18,067 | 30/06/2020 | 2020 |
| 2020 | LUG | 18,204 | 31/07/2020 | 2020 |
| 2020 | AGO | 18,408 | 31/08/2020 | 2020 |
| 2020 | SET | 18,372 | 30/09/2020 | 2020 |
| 2020 | OTT | 18,310 | 31/10/2020 | 2020 |
| 2020 | NOV | 18,920 | 30/11/2020 | 2020 |
| 2020 | DIC | 19,094 | 31/12/2020 | 2020 |
| 2021 | GEN | 19,076 | 08/01/2021 | 2021 |
| 2021 | FEB | 19,109 | 08/02/2021 | 2021 |
| 2021 | MAR | 19,451 | 09/03/2021 | 2021 |
| 2021 | APR | 19,353 | 01/04/2021 | 2021 |
| 2021 | MAG | 19,609 | 31/05/2021 | 2021 |
| 2021 | JUN | 19,885 | 30/06/2021 | 2021 |
| 2021 | LUG | 20,074 | 31/07/2021 | 2021 |
| 2021 | AGO | 20,206 | 31/08/2021 | 2021 |
| 2021 | SET | 19,999 | 30/09/2021 | 2021 |
| 2021 | OTT | 20,227 | 31/10/2021 | 2021 |
| 2021 | NOV | 20,318 | 30/11/2021 | 2021 |
| 2021 | DIC | 20,455 | 31/12/2021 | 2021 |