Frequencies for first 10,000 rows of nlbnl variable in natlterr1999 dataset :

  Number of |
Live Births |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,399       43.99       43.99
          1 |      3,274       32.74       76.73
          2 |      1,475       14.75       91.48
          3 |        491        4.91       96.39
          4 |        195        1.95       98.34
          5 |         87        0.87       99.21
          6 |         39        0.39       99.60
          7 |         18        0.18       99.78
          8 |          9        0.09       99.87
          9 |          3        0.03       99.90
         10 |          2        0.02       99.92
         11 |          4        0.04       99.96
         99 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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