Frequencies for first 10,000 rows of pct012c198 variable in sf12010860us22 dataset :

   91 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,908       99.08       99.08
          1 |         80        0.80       99.88
          2 |         10        0.10       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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