An investment plan includes purchasing at the beginning of the year a piece of machinery costing $101, which will be fully depreciated in the next year, and then salvaged with zero value. The revenue for this year are estimated to be $162 (in actual dollars), and the combined tax rate is 14%. The real interest equals 0 . What is the smallest inflation rate at which the overall investment is unprofitable (NPV=0) ? (Provide your answer as a number, not a percentage, with 0.01 precision.)