Business April 17, 2021 KARACHI: Weekly sensitive price indicator (SPI) for the combined income group increased for the fourth consecutive week, going up 0.54 percent week-on-week and jumping 18.89 percent year-on-year for the week ended April 15, 2021, data showed on Friday. Inflation report released by the Pakistan Bureau of Statistics (PBS) said the increase was mainly on account of higher food and utility prices, with the worst YoY impact felt by those spending up to Rs17,732. For this quintile, SPI was up 22.64 percent YoY and and 0.55 percent WoW. SPI is computed on weekly basis to assess the price movements of essential commodities at shorter interval of time so as to review the price situation in the country. It comprises of 51 essential items and the prices are collected from 50 markets in 17 cities of the country.