Frequencies for first 10,000 rows of pct012l101 variable in sf12010860us31 dataset :

   98 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,928       99.28       99.28
          1 |         63        0.63       99.91
          2 |          6        0.06       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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