The weekly inflation, measured by Sensitive price Indicator (SPI), witnessed an increase of 2.78 per cent to jump to 41.54pc on a year-on-year basis for the week ended on Feb 23, rising from 38.42pc in the previous week. The week-on-week inflation eased to 2.78pc from 2.89pc a week ago. Of the 51 items tracked, the prices of 33 items increased, six items decreased, whereas those of 12 items remained stable.