Frequencies for first 10,000 rows of nlbnl variable in natl1990 dataset :

  Number of |
Live Births |
 Now Living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,354       43.54       43.54
          1 |      3,376       33.76       77.30
          2 |      1,496       14.96       92.26
          3 |        501        5.01       97.27
          4 |        134        1.34       98.61
          5 |         67        0.67       99.28
          6 |         22        0.22       99.50
          7 |          7        0.07       99.57
          8 |          9        0.09       99.66
          9 |          2        0.02       99.68
         11 |          2        0.02       99.70
         99 |         30        0.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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