The Consumer Price Index (CPI) based retail inflation, which measures the rate of price change annually, in April was at 5.47 per cent. In May 2015, retail inflation stood at 5.01 per cent.
In August 2014, consumer inflation was at 7.8 per cent.
Among the items in the consumer basket, vegetables witnessed the sharpest price rise at 10.77 per cent in May compared with 4.82 per cent in April, showed the government data.
The sharp rise in prices of most of eatables led the overall food inflation rising up to 7.55 per cent in May, compared with 6.32 per cent in the previous month.
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"The developing trend of inflation indicates that the RBI is unlikely to initiate further rate cuts in coming months. We retain our projection that the RBI would limit its rate cuts to an additional 25 basis points or 0.25 per cent, towards the fag-end of 2016," CARE Ratings said.
"Based on our expectation of some softening of food inflation from August 2016 onward, we continue to believe that it is too early to rule out further monetary easing in 2016," ICRA Senior Economist Aditi Nayar said.
"So long as structural issues such as productivity in agriculture and inadequacy in agriculture supply chain are not adequately addressed, food inflation will remain a perennial problem for the Indian economy," India Ratings' Principal Economist Sunil Kumar Sinha said.
The Reserve Bank's target for March 2017 retail inflation is 5 per cent.
The RBI keeps a close watch on the crucial data released by the Ministry of Statistics and Programme Implementation to evaluate its interest rate policy.
However, Governor Raghuram Rajan expressed hope that a normal June-September monsoon rains with reasonable spatial and temporal distribution alongside supply management "should moderate unanticipated flares of food inflation".