Frequencies for first 10,000 rows of pct012f087 variable in sf12000860us21 dataset :

   84 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,660       96.60       96.60
          1 |        202        2.02       98.62
          2 |         68        0.68       99.30
          3 |         23        0.23       99.53
          4 |         21        0.21       99.74
          5 |         11        0.11       99.85
          6 |          6        0.06       99.91
          7 |          2        0.02       99.93
          8 |          3        0.03       99.96
          9 |          2        0.02       99.98
         11 |          1        0.01       99.99
         13 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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