Historical stock returns show that small$-$company stocks produced an average return of $17\mathrm{.}4$ percent, inflation averaged $3\mathrm{.}1$ percent, U$.$S$.$ Treasury bills returned an average $3\mathrm{.}8$ percent, and long$-$term corporate bonds returned $6\mathrm{.}2$ percent. What was the risk premium on small$-$company stocks for that period?