Estimated cash flows appear below for an investment project. The project's required rate of return (RRR) is 11.40%. What is the discounted payback period for the project in years? Cash flows after Year 0 are assumed to be end-of-year cash flows.

Year 0 cash flow = -67,000

Year 1 cash flow = 17,000

Year 2 cash flow = 20,000

Year 3 cash flow = 27,000

Year 4 cash flow = 30,000

Year 5 cash flow = 24,000