Frequencies for first 10,000 rows of nlbnd variable in natl1997 dataset :

  Number of |
Live Births |
   Now Dead |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,882       98.82       98.82
          1 |        109        1.09       99.91
          2 |          6        0.06       99.97
          3 |          1        0.01       99.98
         99 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015