Frequencies for first 10,000 rows of dtotord variable in natl1982 dataset :

Total birth |
      order |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,765       37.65       37.65
          2 |      3,049       30.49       68.14
          3 |      1,767       17.67       85.81
          4 |        765        7.65       93.46
          5 |        323        3.23       96.69
          6 |        137        1.37       98.06
          7 |         84        0.84       98.90
          8 |         54        0.54       99.44
          9 |         19        0.19       99.63
         10 |         11        0.11       99.74
         11 |          7        0.07       99.81
         12 |          3        0.03       99.84
         13 |          3        0.03       99.87
         14 |          5        0.05       99.92
         15 |          1        0.01       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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