Frequencies for first 10,000 rows of pct017e023 variable in sf12000860us34 dataset :

Noninstitut |
  ionalized |
population: |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,731       97.31       97.31
          1 |        143        1.43       98.74
          2 |         53        0.53       99.27
          3 |         23        0.23       99.50
          4 |         16        0.16       99.66
          5 |          6        0.06       99.72
          6 |          6        0.06       99.78
          7 |          1        0.01       99.79
          8 |          4        0.04       99.83
          9 |          1        0.01       99.84
         10 |          1        0.01       99.85
         11 |          1        0.01       99.86
         13 |          1        0.01       99.87
         14 |          1        0.01       99.88
         15 |          3        0.03       99.91
         17 |          3        0.03       99.94
         18 |          1        0.01       99.95
         20 |          1        0.01       99.96
         22 |          1        0.01       99.97
         28 |          1        0.01       99.98
         29 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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