Frequencies for first 10,000 rows of pct012c067 variable in sf12000860us18 dataset :

   64 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,409       94.09       94.09
          1 |        482        4.82       98.91
          2 |         70        0.70       99.61
          3 |         18        0.18       99.79
          4 |          7        0.07       99.86
          5 |          3        0.03       99.89
          6 |          3        0.03       99.92
          7 |          1        0.01       99.93
         10 |          1        0.01       99.94
         13 |          1        0.01       99.95
         14 |          1        0.01       99.96
         16 |          1        0.01       99.97
         18 |          1        0.01       99.98
         28 |          1        0.01       99.99
         48 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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