Frequencies for first 10,000 rows of pct012f200 variable in sf12010860us25 dataset :

   93 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,758       97.58       97.58
          1 |        168        1.68       99.26
          2 |         41        0.41       99.67
          3 |         15        0.15       99.82
          4 |          9        0.09       99.91
          5 |          4        0.04       99.95
          6 |          2        0.02       99.97
          7 |          1        0.01       99.98
          8 |          1        0.01       99.99
         14 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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