Frequencies for first 10,000 rows of pct012g097 variable in sf12000860us22 dataset :

   94 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,917       99.17       99.17
          1 |         74        0.74       99.91
          2 |          8        0.08       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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