The index measures the monthly evolution of the volume of industrial production (excluding construction). With effect from January 2018 the indices are calculated with reference to the base year 2015 using the Ateco 2007 classification (Italian edition of Nace Rev. 2).
In September 2020 the seasonally adjusted industrial production index decreased by 5.6% compared with the previous month. The change of the average of the last three months with respect to the previous three months was +28.6%.
The calendar adjusted industrial production index decreased by 5.1% compared with September 2019 (calendar working days being 22 versus 21 days in September 2019).
The unadjusted industrial production index decreased by 2.1% compared with September 2019.