Frequencies for first 10,000 rows of pct012n191 variable in sf12000860us29 dataset :

   84 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,901       99.01       99.01
          1 |         80        0.80       99.81
          2 |         17        0.17       99.98
          5 |          1        0.01       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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