Frequencies for first 10,000 rows of pct012g081 variable in sf12000860us22 dataset :

   78 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,038       90.38       90.38
          1 |        680        6.80       97.18
          2 |        172        1.72       98.90
          3 |         51        0.51       99.41
          4 |         21        0.21       99.62
          5 |         21        0.21       99.83
          6 |          5        0.05       99.88
          7 |          4        0.04       99.92
          8 |          5        0.05       99.97
          9 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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