Frequencies for first 10,000 rows of pct012f196 variable in sf12000860us21 dataset :

   89 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,674       96.74       96.74
          1 |        213        2.13       98.87
          2 |         59        0.59       99.46
          3 |         17        0.17       99.63
          4 |         13        0.13       99.76
          5 |          5        0.05       99.81
          6 |          8        0.08       99.89
          7 |          7        0.07       99.96
          8 |          2        0.02       99.98
          9 |          1        0.01       99.99
         11 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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