Frequencies for first 10,000 rows of pct012d094 variable in sf12010860us23 dataset :

   91 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,642       96.42       96.42
          1 |        269        2.69       99.11
          2 |         56        0.56       99.67
          3 |         13        0.13       99.80
          4 |          7        0.07       99.87
          5 |          4        0.04       99.91
          6 |          4        0.04       99.95
          7 |          1        0.01       99.96
          8 |          1        0.01       99.97
          9 |          1        0.01       99.98
         16 |          1        0.01       99.99
         30 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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