Frequencies for first 10,000 rows of tbo variable in natlterr2005 dataset :

Total Birth |
  Order U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,334       33.34       33.34
          2 |      2,525       25.25       58.59
          3 |      1,718       17.18       75.77
          4 |        966        9.66       85.43
          5 |        579        5.79       91.22
          6 |        362        3.62       94.84
          7 |        209        2.09       96.93
          8 |        118        1.18       98.11
          9 |         55        0.55       98.66
         10 |         36        0.36       99.02
         11 |         14        0.14       99.16
         12 |          7        0.07       99.23
         13 |          4        0.04       99.27
         14 |         14        0.14       99.41
         15 |          3        0.03       99.44
         16 |          2        0.02       99.46
         17 |          2        0.02       99.48
         22 |          1        0.01       99.49
         99 |         51        0.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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