Frequencies for first 10,000 rows of pct012o077 variable in sf12010860us34 dataset :

   74 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,926       89.26       89.26
          1 |        837        8.37       97.63
          2 |        171        1.71       99.34
          3 |         40        0.40       99.74
          4 |         13        0.13       99.87
          5 |          6        0.06       99.93
          6 |          4        0.04       99.97
          7 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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