Frequencies for first 10,000 rows of dob_mm variable in natl2014 dataset :

Birth Month |
 01 January |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        932        9.32        9.32
          2 |        885        8.85       18.17
          3 |        899        8.99       27.16
          4 |        943        9.43       36.59
          5 |        983        9.83       46.42
          6 |        913        9.13       55.55
          7 |      1,000       10.00       65.55
          8 |        958        9.58       75.13
          9 |        950        9.50       84.63
         10 |        941        9.41       94.04
         11 |        592        5.92       99.96
         12 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016