Frequencies for first 10,000 rows of pct012n094 variable in sf12000860us29 dataset :

   91 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,984       99.84       99.84
          1 |         15        0.15       99.99
          2 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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