$\backslash$table$[[$Year$,\backslash$table$[[$Large$-$Company$],[$Stocks$]],\backslash$table$[[$US Treasury Bills$],[1]]],[2,-14\mathrm{.}69,7\mathrm{.}29],[3,-26\mathrm{.}47,7\mathrm{.}99],[4,37\mathrm{.}23,5\mathrm{.}87],[5,23\mathrm{.}93,5\mathrm{.}07],[6,-7\mathrm{.}16,5\mathrm{.}45],[,6\mathrm{.}57,7\mathrm{.}64]]$

On average, how much more did large$-$company stocks generate in return over US Treasury bills? Compute the average return of large$-$company stocks, then for US Treasury bills, and then compute the difference $($large stocks minus US T$-$bills$).$ Round your answer to the nearest $xx.xx\%.$