Frequencies for first 10,000 rows of pct012c201 variable in sf12010860us22 dataset :

   94 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,956       99.56       99.56
          1 |         42        0.42       99.98
          2 |          1        0.01       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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