Frequencies for first 10,000 rows of pct017d011 variable in sf12000860us34 dataset :

Noninstitut |
  ionalized |
population: |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,725       97.25       97.25
          1 |        165        1.65       98.90
          2 |         43        0.43       99.33
          3 |         21        0.21       99.54
          4 |         12        0.12       99.66
          5 |          5        0.05       99.71
          6 |          7        0.07       99.78
          7 |          4        0.04       99.82
          8 |          6        0.06       99.88
          9 |          4        0.04       99.92
         10 |          1        0.01       99.93
         11 |          3        0.03       99.96
         12 |          1        0.01       99.97
         13 |          1        0.01       99.98
         14 |          1        0.01       99.99
         15 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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