Frequencies for first 10,000 rows of birday variable in natl1986 dataset :

 Birth Date |
      - Day |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        356        3.56        3.56
          2 |        339        3.39        6.95
          3 |        376        3.76       10.71
          4 |        379        3.79       14.50
          5 |        358        3.58       18.08
          6 |        381        3.81       21.89
          7 |        403        4.03       25.92
          8 |        349        3.49       29.41
          9 |        322        3.22       32.63
         10 |        377        3.77       36.40
         11 |        352        3.52       39.92
         12 |        317        3.17       43.09
         13 |        368        3.68       46.77
         14 |        373        3.73       50.50
         15 |        282        2.82       53.32
         16 |        330        3.30       56.62
         17 |        325        3.25       59.87
         18 |        339        3.39       63.26
         19 |        294        2.94       66.20
         20 |        332        3.32       69.52
         21 |        348        3.48       73.00
         22 |        281        2.81       75.81
         23 |        272        2.72       78.53
         24 |        334        3.34       81.87
         25 |        306        3.06       84.93
         26 |        294        2.94       87.87
         27 |        323        3.23       91.10
         28 |        330        3.30       94.40
         29 |        180        1.80       96.20
         30 |        195        1.95       98.15
         31 |        185        1.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016