Frequencies for first 10,000 rows of llbyr variable in natl1981 dataset :

    Year of |
  Last Live |
      Birth |      Freq.     Percent        Cum.
------------+-----------------------------------
         52 |          1        0.01        0.01
         53 |          1        0.01        0.02
         59 |          1        0.01        0.03
         60 |          1        0.01        0.04
         61 |          2        0.02        0.06
         62 |          5        0.05        0.11
         63 |          2        0.02        0.13
         64 |          9        0.09        0.22
         65 |         17        0.17        0.39
         66 |         17        0.17        0.56
         67 |         26        0.26        0.82
         68 |         37        0.37        1.19
         69 |         52        0.52        1.71
         70 |         99        0.99        2.70
         71 |        125        1.25        3.95
         72 |        147        1.47        5.42
         73 |        194        1.94        7.36
         74 |        313        3.13       10.49
         75 |        370        3.70       14.19
         76 |        498        4.98       19.17
         77 |      5,183       51.83       71.00
         78 |      1,070       10.70       81.70
         79 |      1,387       13.87       95.57
         80 |        236        2.36       97.93
         81 |        101        1.01       98.94
         99 |        106        1.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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