Frequencies for first 10,000 rows of pct012f205 variable in sf12000860us21 dataset :

   98 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,936       99.36       99.36
          1 |         53        0.53       99.89
          2 |          8        0.08       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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