Frequencies for first 10,000 rows of pct012l205 variable in sf12000860us27 dataset :

   98 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,942       99.42       99.42
          1 |         53        0.53       99.95
          2 |          2        0.02       99.97
          3 |          1        0.01       99.98
          4 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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