Frequencies for first 10,000 rows of p034f022 variable in sf12010880us12 dataset :

Noninstitut |
  ionalized |
 population |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,750       97.50       97.50
          1 |        147        1.47       98.97
          2 |         41        0.41       99.38
          3 |         16        0.16       99.54
          4 |         13        0.13       99.67
          5 |          8        0.08       99.75
          6 |          2        0.02       99.77
          7 |          6        0.06       99.83
          8 |          4        0.04       99.87
          9 |          2        0.02       99.89
         10 |          3        0.03       99.92
         11 |          3        0.03       99.95
         12 |          1        0.01       99.96
         16 |          2        0.02       99.98
         17 |          1        0.01       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017