Frequencies for first 10,000 rows of pct012o084 variable in sf12000860us30 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,410       94.10       94.10
          1 |        486        4.86       98.96
          2 |         75        0.75       99.71
          3 |         17        0.17       99.88
          4 |          5        0.05       99.93
          5 |          5        0.05       99.98
          6 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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