Frequencies for first 10,000 rows of nlbnl variable in natl1969 dataset :

 Born alive |
      - now |
     living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,875       38.75       38.75
          1 |      2,678       26.78       65.53
          2 |      1,414       14.14       79.67
          3 |        811        8.11       87.78
          4 |        406        4.06       91.84
          5 |        244        2.44       94.28
          6 |        176        1.76       96.04
          7 |        118        1.18       97.22
          8 |         82        0.82       98.04
          9 |         49        0.49       98.53
         10 |         41        0.41       98.94
         11 |         26        0.26       99.20
         12 |         13        0.13       99.33
         13 |          6        0.06       99.39
         14 |          1        0.01       99.40
         21 |          1        0.01       99.41
         22 |          1        0.01       99.42
         37 |          1        0.01       99.43
         50 |          2        0.02       99.45
         66 |          2        0.02       99.47
         77 |         32        0.32       99.79
         99 |         21        0.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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