Frequencies for first 10,000 rows of pct012f204 variable in sf12010860us25 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,870       98.70       98.70
          1 |        103        1.03       99.73
          2 |         20        0.20       99.93
          3 |          5        0.05       99.98
          4 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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