Frequencies for first 10,000 rows of nlbnl variable in natlterr1998 dataset :

  Number of |
Live Births |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,334       43.34       43.34
          1 |      3,166       31.66       75.00
          2 |      1,552       15.52       90.52
          3 |        557        5.57       96.09
          4 |        188        1.88       97.97
          5 |        104        1.04       99.01
          6 |         40        0.40       99.41
          7 |         32        0.32       99.73
          8 |         15        0.15       99.88
          9 |          3        0.03       99.91
         10 |          6        0.06       99.97
         11 |          1        0.01       99.98
         12 |          1        0.01       99.99
         13 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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