Frequencies for first 10,000 rows of dob_wk variable in natl2004 dataset :

Weekday U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,071       10.71       10.71
          2 |      1,439       14.39       25.10
          3 |      1,515       15.15       40.25
          4 |      1,593       15.93       56.18
          5 |      1,595       15.95       72.13
          6 |      1,629       16.29       88.42
          7 |      1,158       11.58      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 21 Jan 2016