Frequencies for first 10,000 rows of pct012g200 variable in sf12010860us26 dataset :

   93 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,699       96.99       96.99
          1 |        256        2.56       99.55
          2 |         39        0.39       99.94
          3 |          5        0.05       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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