Frequencies for first 10,000 rows of pct012n084 variable in sf12000860us29 dataset :

   81 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,918       99.18       99.18
          1 |         74        0.74       99.92
          2 |          6        0.06       99.98
          4 |          1        0.01       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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