Frequencies for first 10,000 rows of dtotord variable in natl1974 dataset :

Total birth |
      order |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,321       43.21       43.21
          2 |      2,862       28.62       71.83
          3 |      1,344       13.44       85.27
          4 |        638        6.38       91.65
          5 |        326        3.26       94.91
          6 |        183        1.83       96.74
          7 |        120        1.20       97.94
          8 |         56        0.56       98.50
          9 |         41        0.41       98.91
         10 |         33        0.33       99.24
         11 |         11        0.11       99.35
         12 |         14        0.14       99.49
         13 |         11        0.11       99.60
         14 |          4        0.04       99.64
         15 |          2        0.02       99.66
         16 |          1        0.01       99.67
         19 |          1        0.01       99.68
         25 |          1        0.01       99.69
         99 |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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