The overall PPI of this group (using 2011 as the base year) stood at 630.6 in Q2 (June 21-Sept. 21), indicating a 23.1% increase compared with the same quarter of the year before. Year-on-year producer inflation of Q1 had increased by 3.3%.
The importance of PPI lies in its predictive content for the future pattern of Consumer Price Index. Changes in PPI are usually reflected in CPI within a short period of time.