Frequencies for first 10,000 rows of pct012f203 variable in sf12000860us21 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,908       99.08       99.08
          1 |         77        0.77       99.85
          2 |         11        0.11       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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