“The food at home index rose 13.5 percent over the last 12 months, the largest 12-month increase since the period ending March 1979,” BLS said. “The index for other food at home rose 16.7 percent and the index for cereals and bakery products increased 16.4 percent over the year. The remaining major grocery store food groups posted increases ranging from 9.4 percent (fruits and vegetables) to 16.2 percent (dairy and related products).”