Last month's preliminary figures for the corporate goods price index, which shows the prices of goods traded between companies, were 107.8, with the average of 2015 as 100, which is 35 years since February 1986 when Japan entered the bubble economy. It was the highest in a month.
The background is the rise in international crude oil prices.
The corporate price index has surpassed the same month last year for eight consecutive months, with an 8.0% increase last month for the first time in 40 years and 9 months since January 1981.