India's annual rate of inflation, based on wholesale prices, rose to 1.51 per cent for the week ended October 17 from 1.21 per cent the week before, data released on Thursday showed.

The official Wholesale Price Index (WPI) for the week ended October 17 remained unchanged at its previous week's level of 242.2 (provisional) as the index for primary articles and fuel, power, light and lubricants declined 1 per cent while manufactured products rose by 1 per cent.