Frequencies for first 10,000 rows of pct017e060 variable in sf12000860us34 dataset :

Noninstitut |
  ionalized |
population: |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,740       97.40       97.40
          1 |        155        1.55       98.95
          2 |         48        0.48       99.43
          3 |         13        0.13       99.56
          4 |         13        0.13       99.69
          5 |          7        0.07       99.76
          6 |          3        0.03       99.79
          7 |          4        0.04       99.83
          8 |          2        0.02       99.85
          9 |          2        0.02       99.87
         10 |          4        0.04       99.91
         12 |          1        0.01       99.92
         13 |          2        0.02       99.94
         14 |          1        0.01       99.95
         15 |          2        0.02       99.97
         16 |          1        0.01       99.98
         17 |          1        0.01       99.99
         27 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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