Frequencies for first 10,000 rows of nlbnd variable in natl1992 dataset :

  Number of |
Live Births |
   Now Dead |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,868       98.68       98.68
          1 |        119        1.19       99.87
          2 |         11        0.11       99.98
         99 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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