Frequencies for first 10,000 rows of dob_mm variable in natl2016 dataset :

Birth Month |
 01 January |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        933        9.33        9.33
          2 |        820        8.20       17.53
          3 |        956        9.56       27.09
          4 |        906        9.06       36.15
          5 |        951        9.51       45.66
          6 |        976        9.76       55.42
          7 |        947        9.47       64.89
          8 |        942        9.42       74.31
          9 |        941        9.41       83.72
         10 |        934        9.34       93.06
         11 |        693        6.93       99.99
         12 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 4 Oct 2017