Frequencies for first 10,000 rows of pct012g188 variable in sf12010880us26 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,011       90.11       90.11
          1 |        674        6.74       96.85
          2 |        179        1.79       98.64
          3 |         69        0.69       99.33
          4 |         21        0.21       99.54
          5 |         13        0.13       99.67
          6 |         11        0.11       99.78
          7 |          7        0.07       99.85
          8 |          7        0.07       99.92
          9 |          4        0.04       99.96
         10 |          1        0.01       99.97
         13 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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