Frequencies for first 10,000 rows of pct012l075 variable in sf12010860us31 dataset :

   72 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,916       79.16       79.16
          1 |        865        8.65       87.81
          2 |        384        3.84       91.65
          3 |        221        2.21       93.86
          4 |        146        1.46       95.32
          5 |         93        0.93       96.25
          6 |         58        0.58       96.83
          7 |         60        0.60       97.43
          8 |         32        0.32       97.75
          9 |         22        0.22       97.97
         10 |         20        0.20       98.17
         11 |         15        0.15       98.32
         12 |         24        0.24       98.56
         13 |         14        0.14       98.70
         14 |         19        0.19       98.89
         15 |          9        0.09       98.98
         16 |          9        0.09       99.07
         17 |          8        0.08       99.15
         18 |         10        0.10       99.25
         19 |          6        0.06       99.31
         20 |          6        0.06       99.37
         21 |          6        0.06       99.43
         22 |          7        0.07       99.50
         23 |          3        0.03       99.53
         24 |          3        0.03       99.56
         25 |          3        0.03       99.59
         26 |          3        0.03       99.62
         27 |          3        0.03       99.65
         28 |          2        0.02       99.67
         29 |          3        0.03       99.70
         30 |          1        0.01       99.71
         31 |          3        0.03       99.74
         32 |          1        0.01       99.75
         33 |          1        0.01       99.76
         34 |          2        0.02       99.78
         36 |          2        0.02       99.80
         37 |          3        0.03       99.83
         40 |          1        0.01       99.84
         41 |          2        0.02       99.86
         42 |          1        0.01       99.87
         43 |          1        0.01       99.88
         44 |          2        0.02       99.90
         49 |          1        0.01       99.91
         51 |          1        0.01       99.92
         55 |          1        0.01       99.93
         57 |          1        0.01       99.94
         62 |          1        0.01       99.95
         67 |          1        0.01       99.96
        116 |          2        0.02       99.98
        121 |          1        0.01       99.99
        180 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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