Frequencies for first 10,000 rows of pct017c040 variable in sf12000860us34 dataset :

   Under 18 |
     years: |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,836       98.36       98.36
          1 |        127        1.27       99.63
          2 |         18        0.18       99.81
          3 |          9        0.09       99.90
          4 |          5        0.05       99.95
          5 |          2        0.02       99.97
          6 |          1        0.01       99.98
          7 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017