The Index of Core Industries (ICI) has updated its base year from 2011-12 to 2022-23 to better reflect current economic realities.
The number of core industries tracked has increased from eight to nine with the addition of Iron Ore.
Methodological changes include using gross production for Steel and tracking only raw coal to eliminate double-counting.
A linking factor of 1.47 has been introduced to ensure data continuity between the old and new series.