Frequencies for first 10,000 rows of nlbnl variable in natl1989 dataset :

  Number of |
Live Births |
 Now Living |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,356       43.56       43.56
          1 |      3,421       34.21       77.77
          2 |      1,457       14.57       92.34
          3 |        476        4.76       97.10
          4 |        135        1.35       98.45
          5 |         73        0.73       99.18
          6 |         24        0.24       99.42
          7 |         17        0.17       99.59
          8 |          5        0.05       99.64
          9 |          6        0.06       99.70
         11 |          3        0.03       99.73
         12 |          1        0.01       99.74
         99 |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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