Frequencies for first 10,000 rows of pct012g168 variable in sf12000860us22 dataset :

   61 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,108       81.08       81.08
          1 |      1,071       10.71       91.79
          2 |        355        3.55       95.34
          3 |        134        1.34       96.68
          4 |         84        0.84       97.52
          5 |         50        0.50       98.02
          6 |         40        0.40       98.42
          7 |         24        0.24       98.66
          8 |         23        0.23       98.89
          9 |         23        0.23       99.12
         10 |         18        0.18       99.30
         11 |         10        0.10       99.40
         12 |          9        0.09       99.49
         13 |          7        0.07       99.56
         14 |          5        0.05       99.61
         15 |         11        0.11       99.72
         16 |          5        0.05       99.77
         17 |          3        0.03       99.80
         18 |          5        0.05       99.85
         19 |          2        0.02       99.87
         20 |          4        0.04       99.91
         21 |          1        0.01       99.92
         22 |          1        0.01       99.93
         23 |          3        0.03       99.96
         24 |          3        0.03       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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