Frequencies for first 10,000 rows of llbmon variable in natl1983 dataset :

   Month of |
  Last Live |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        524        5.24        5.24
          2 |        526        5.26       10.50
          3 |        456        4.56       15.06
          4 |        370        3.70       18.76
          5 |        399        3.99       22.75
          6 |        418        4.18       26.93
          7 |        481        4.81       31.74
          8 |        466        4.66       36.40
          9 |        497        4.97       41.37
         10 |        485        4.85       46.22
         11 |        449        4.49       50.71
         12 |        499        4.99       55.70
         77 |      4,344       43.44       99.14
         99 |         86        0.86      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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