Frequencies for first 10,000 rows of pct012n196 variable in sf12000860us29 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,935       99.35       99.35
          1 |         54        0.54       99.89
          2 |          8        0.08       99.97
          3 |          2        0.02       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017