Frequencies for first 10,000 rows of pct012o191 variable in sf12010860us34 dataset :

   84 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,208       92.08       92.08
          1 |        629        6.29       98.37
          2 |        131        1.31       99.68
          3 |         21        0.21       99.89
          4 |          6        0.06       99.95
          5 |          3        0.03       99.98
          6 |          1        0.01       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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