Frequencies for first 10,000 rows of llbmon variable in natl1990 dataset :

   Month of |
  Last Live |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        544        5.44        5.44
          2 |        498        4.98       10.42
          3 |        447        4.47       14.89
          4 |        400        4.00       18.89
          5 |        409        4.09       22.98
          6 |        426        4.26       27.24
          7 |        457        4.57       31.81
          8 |        483        4.83       36.64
          9 |        474        4.74       41.38
         10 |        469        4.69       46.07
         11 |        433        4.33       50.40
         12 |        500        5.00       55.40
         77 |      4,318       43.18       98.58
         99 |        142        1.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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