What is the profitability index of the following stream of cash flows if the discount rate is $11\%?$

Year $0$

Year $1$

Year $2$

Year $3$

Year $4$

$-$$$21\mathrm{.}4$ Million

$$7\mathrm{.}8$ Million

$$8\mathrm{.}1$ million

$$7\mathrm{.}1$ million

$$6\mathrm{.}4$ million

$0\mathrm{.}99$

$1\mathrm{.}01$

$1\mathrm{.}03$

$1\mathrm{.}05$

$1\mathrm{.}08$