Frequencies for first 10,000 rows of pct012d201 variable in sf12010860us23 dataset :

   94 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,719       97.19       97.19
          1 |        214        2.14       99.33
          2 |         36        0.36       99.69
          3 |         16        0.16       99.85
          4 |          2        0.02       99.87
          5 |          6        0.06       99.93
          6 |          3        0.03       99.96
          7 |          1        0.01       99.97
         14 |          1        0.01       99.98
         20 |          1        0.01       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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