Frequencies for first 10,000 rows of lfdyr variable in natl1985 dataset :

    Date of |
 Last Fetal |
    Death - |
       Year |      Freq.     Percent        Cum.
------------+-----------------------------------
         62 |          1        0.01        0.01
         63 |          1        0.01        0.02
         64 |          1        0.01        0.03
         65 |          1        0.01        0.04
         67 |          1        0.01        0.05
         68 |          2        0.02        0.07
         69 |          7        0.07        0.14
         70 |         12        0.12        0.26
         71 |         17        0.17        0.43
         72 |         25        0.25        0.68
         73 |         16        0.16        0.84
         74 |         24        0.24        1.08
         75 |         36        0.36        1.44
         76 |         60        0.60        2.04
         77 |      8,286       82.86       84.90
         78 |         78        0.78       85.68
         79 |        119        1.19       86.87
         80 |        140        1.40       88.27
         81 |        156        1.56       89.83
         82 |        237        2.37       92.20
         83 |        426        4.26       96.46
         84 |        230        2.30       98.76
         85 |          2        0.02       98.78
         99 |        122        1.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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