Frequencies for first 10,000 rows of nlbnl variable in natl1991 dataset :

  Number of |
Live Births |
 Now Living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,340       43.40       43.40
          1 |      3,425       34.25       77.65
          2 |      1,518       15.18       92.83
          3 |        448        4.48       97.31
          4 |        186        1.86       99.17
          5 |         44        0.44       99.61
          6 |         25        0.25       99.86
          7 |          5        0.05       99.91
          8 |          3        0.03       99.94
          9 |          1        0.01       99.95
         10 |          1        0.01       99.96
         13 |          1        0.01       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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