Frequencies for first 10,000 rows of pct012o081 variable in sf12010860us34 dataset :

   78 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,214       92.14       92.14
          1 |        672        6.72       98.86
          2 |         81        0.81       99.67
          3 |         24        0.24       99.91
          4 |          8        0.08       99.99
          7 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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