What is the IRR for the following cash flows?

Year $0$ Year $1$ Year $2$ Year $3$ Year $4$ Year $5$ Year $6$ Year $7$

$-$$$100$ $$30$ $$25$ $$10$ $$11$ $$15$ $$18$ $$20$

Enter the answer as a decimal rounded to three decimal places. For example, the answer $20\mathrm{.}22\%$ would be entered as $0\mathrm{.}202$