An investment requires an initial cash outflow of $5,100, and it will bring in cash inflows of $2,700, $1,500, $2,600, $2,700, for the next four years, respectively. What is the internal rate of return (IRR) of this project? (Format answer to percent and rounded to two decimals, enter your answers without %, for example, for answer 0.1243, enter 12.43 only)