Frequencies for first 10,000 rows of dob_wk variable in natl2009 dataset :

Weekday U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        744        7.44        7.44
          2 |      1,610       16.10       23.54
          3 |      1,728       17.28       40.82
          4 |      1,795       17.95       58.77
          5 |      1,707       17.07       75.84
          6 |      1,437       14.37       90.21
          7 |        979        9.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015