What is the discount rate at which the following cash flows have a NPV of $$0?$ Answer in $\%,$ rounding to $2$ decimals.

Year $0$ cash flow $=-149,000$

Year $1$ cash flow $=39,000$

Year $2$ cash flow $=30,000$

Year $3$ cash flow $=40,000$

Year $4$ cash flow $=30,000$

Year $5$ cash flow $=41,000$

Year $6$ cash flow $=37,000$