Frequencies for first 10,000 rows of pct012c076 variable in sf12010860us22 dataset :

   73 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,501       95.01       95.01
          1 |        398        3.98       98.99
          2 |         62        0.62       99.61
          3 |         21        0.21       99.82
          4 |          7        0.07       99.89
          5 |          4        0.04       99.93
          6 |          2        0.02       99.95
          8 |          1        0.01       99.96
         11 |          1        0.01       99.97
         13 |          1        0.01       99.98
         18 |          1        0.01       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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