Frequencies for first 10,000 rows of pct012c064 variable in sf12010860us22 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,807       88.07       88.07
          1 |        891        8.91       96.98
          2 |        182        1.82       98.80
          3 |         68        0.68       99.48
          4 |         21        0.21       99.69
          5 |         10        0.10       99.79
          6 |          2        0.02       99.81
          7 |          2        0.02       99.83
          9 |          3        0.03       99.86
         10 |          4        0.04       99.90
         11 |          1        0.01       99.91
         12 |          1        0.01       99.92
         18 |          1        0.01       99.93
         22 |          1        0.01       99.94
         23 |          1        0.01       99.95
         31 |          1        0.01       99.96
         37 |          1        0.01       99.97
         57 |          1        0.01       99.98
         64 |          1        0.01       99.99
         65 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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