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 March 2018 the seasonally adjusted industrial production index increased by 1.2% compared with the previous month. The percentage change of the average of the last three months with respect to the previous three months was unchanged.
The calendar adjusted industrial production index increased by 3.6% compared with March 2017 (calendar working days in March 2018 being 22 versus 23 days in March 2017); in the period January-March 2018 the percentage change was +3.4 compared with the same period of 2017.
The unadjusted industrial production index decreased by 1.1% compared with March 2017.