Frequencies for first 10,000 rows of pct012f074 variable in sf12000860us21 dataset :

   71 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,203       92.03       92.03
          1 |        425        4.25       96.28
          2 |        113        1.13       97.41
          3 |         65        0.65       98.06
          4 |         49        0.49       98.55
          5 |         25        0.25       98.80
          6 |         23        0.23       99.03
          7 |         19        0.19       99.22
          8 |         11        0.11       99.33
          9 |          6        0.06       99.39
         10 |          6        0.06       99.45
         11 |          6        0.06       99.51
         12 |          3        0.03       99.54
         13 |          8        0.08       99.62
         14 |          3        0.03       99.65
         15 |          4        0.04       99.69
         16 |          3        0.03       99.72
         18 |          3        0.03       99.75
         19 |          3        0.03       99.78
         20 |          2        0.02       99.80
         21 |          3        0.03       99.83
         22 |          2        0.02       99.85
         23 |          3        0.03       99.88
         24 |          1        0.01       99.89
         25 |          1        0.01       99.90
         26 |          3        0.03       99.93
         28 |          3        0.03       99.96
         30 |          1        0.01       99.97
         34 |          1        0.01       99.98
         36 |          1        0.01       99.99
         43 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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