Frequencies for first 10,000 rows of pct012o177 variable in sf12010860us34 dataset :

   70 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,475       84.75       84.75
          1 |      1,097       10.97       95.72
          2 |        272        2.72       98.44
          3 |         99        0.99       99.43
          4 |         19        0.19       99.62
          5 |         20        0.20       99.82
          6 |          5        0.05       99.87
          7 |          6        0.06       99.93
          8 |          2        0.02       99.95
          9 |          2        0.02       99.97
         10 |          1        0.01       99.98
         11 |          1        0.01       99.99
         14 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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