Today you make a single deposit of $15000$ at a savings account, and freeze it for exactly $13$ years, during which you make no additional savings, and you only let your savings account grow by the interest earned.

There are three savings account schemes available:

You receive $7\mathrm{.}3\%$ nominal interest per annum, which will be compounded annually.

You receive $7\mathrm{.}1\%$ nominal interest per annum, which will be compounded monthly.

You receive $6\mathrm{.}9\%$ nominal interest per annum, which will be compounded continuously.

Which savings account scheme yields you most value?