Frequencies for first 10,000 rows of pct012f095 variable in sf12000860us21 dataset :

   92 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,881       98.81       98.81
          1 |         94        0.94       99.75
          2 |         19        0.19       99.94
          3 |          3        0.03       99.97
          4 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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