The index measures the monthly evolution of the volume of industrial production (excluding construction). With effect from January 2013 the indices are calculated with reference to the base year 2010 using the Ateco 2007 classification (Italian edition of Nace Rev. 2).
In July 2013 the industrial production index seasonally adjusted decreased by 1.1% compared with the previous month. The percentage change of the average of the last three months with respect to the previous three months was -0.5.
The calendar adjusted industrial production index decreased by 4.3 % compared with July 2012 (calendar working days in July 2013 being 23 versus 22 days in July 2012); in the period January-July 2013 the percentage change was -4.0 compared with the same period of 2012.
The unadjusted index of industrial production decreased by 1.4% compared with July 2012.