＜Calculation method for BEI＞
Break-Even Infration Rate can be interpreted as the market measure of inflation expectations. Using the following simplified formula, the data in the avobe chart ara calculated based on the BB JGB Closing Prices.
BEI＝（R-r）/（1+ｒ）≒R-r
R：nominal yield (compound) ｒ：real yield (compound)