<h1>Index of core industries shows year on year growth with mixed sectoral performance and provisional data revisions.</h1> The combined Index of Eight Core Industries (weight 37.90% in the IIP) rose year on year, with the index at 156.2 in September 2013 reflecting an eight percent increase versus September 2012. The press release provides provisional monthly and April-September cumulative movements for each core industry, noting notable rises in coal, refinery products, cement and electricity, a sharp decline in natural gas, marginal crude oil growth with cumulative moderation, and revisions made where prior year data were updated.