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

    Date of |
 Last Fetal |
    Death - |
       Year |      Freq.     Percent        Cum.
------------+-----------------------------------
         58 |          1        0.01        0.01
         60 |          1        0.01        0.02
         61 |          1        0.01        0.03
         63 |          3        0.03        0.06
         64 |          5        0.05        0.11
         65 |          4        0.04        0.15
         66 |          3        0.03        0.18
         67 |          6        0.06        0.24
         68 |          2        0.02        0.26
         69 |         11        0.11        0.37
         70 |         15        0.15        0.52
         71 |         26        0.26        0.78
         72 |         24        0.24        1.02
         73 |         33        0.33        1.35
         74 |         45        0.45        1.80
         75 |         53        0.53        2.33
         76 |         88        0.88        3.21
         77 |      8,324       83.24       86.45
         78 |        143        1.43       87.88
         79 |        197        1.97       89.85
         80 |        258        2.58       92.43
         81 |        401        4.01       96.44
         82 |        236        2.36       98.80
         83 |          3        0.03       98.83
         99 |        117        1.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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