Tokyo, Sept. 12 (Jiji Press)--The average price per 5 kilograms of rice sold at some 1,000 supermarkets in Japan last week topped 4,000 yen for the first time since early June, the agriculture ministry said Friday. The average price rose 264 yen from the previous week to 4,155 yen in the week through Sunday, up for the second straight week. This is the steepest increase since data began ...