Frequencies for first 10,000 rows of pct012f071 variable in sf12010860us25 dataset :

   68 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,603       86.03       86.03
          1 |        693        6.93       92.96
          2 |        233        2.33       95.29
          3 |         99        0.99       96.28
          4 |         64        0.64       96.92
          5 |         57        0.57       97.49
          6 |         39        0.39       97.88
          7 |         47        0.47       98.35
          8 |         19        0.19       98.54
          9 |         16        0.16       98.70
         10 |         12        0.12       98.82
         11 |         16        0.16       98.98
         12 |          5        0.05       99.03
         13 |         13        0.13       99.16
         14 |          6        0.06       99.22
         15 |          9        0.09       99.31
         16 |          5        0.05       99.36
         17 |          5        0.05       99.41
         18 |          4        0.04       99.45
         19 |          9        0.09       99.54
         20 |          3        0.03       99.57
         21 |          3        0.03       99.60
         22 |          1        0.01       99.61
         23 |          4        0.04       99.65
         24 |          3        0.03       99.68
         26 |          1        0.01       99.69
         27 |          8        0.08       99.77
         28 |          1        0.01       99.78
         29 |          1        0.01       99.79
         30 |          4        0.04       99.83
         31 |          3        0.03       99.86
         33 |          2        0.02       99.88
         34 |          2        0.02       99.90
         35 |          2        0.02       99.92
         36 |          1        0.01       99.93
         37 |          1        0.01       99.94
         39 |          1        0.01       99.95
         40 |          1        0.01       99.96
         43 |          2        0.02       99.98
         48 |          1        0.01       99.99
         53 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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