Frequencies for first 10,000 rows of pct012g028 variable in sf12010860us26 dataset :

   25 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,381       63.81       63.81
          1 |      1,265       12.65       76.46
          2 |        582        5.82       82.28
          3 |        364        3.64       85.92
          4 |        262        2.62       88.54
          5 |        205        2.05       90.59
          6 |        169        1.69       92.28
          7 |        121        1.21       93.49
          8 |        101        1.01       94.50
          9 |         73        0.73       95.23
         10 |         71        0.71       95.94
         11 |         60        0.60       96.54
         12 |         45        0.45       96.99
         13 |         35        0.35       97.34
         14 |         34        0.34       97.68
         15 |         27        0.27       97.95
         16 |         21        0.21       98.16
         17 |         29        0.29       98.45
         18 |         12        0.12       98.57
         19 |         15        0.15       98.72
         20 |         11        0.11       98.83
         21 |         17        0.17       99.00
         22 |         10        0.10       99.10
         23 |          8        0.08       99.18
         24 |         13        0.13       99.31
         25 |          6        0.06       99.37
         26 |          7        0.07       99.44
         27 |          3        0.03       99.47
         28 |         10        0.10       99.57
         29 |          8        0.08       99.65
         30 |          3        0.03       99.68
         31 |          2        0.02       99.70
         32 |          2        0.02       99.72
         34 |          3        0.03       99.75
         35 |          4        0.04       99.79
         37 |          1        0.01       99.80
         38 |          5        0.05       99.85
         40 |          3        0.03       99.88
         42 |          3        0.03       99.91
         44 |          1        0.01       99.92
         46 |          2        0.02       99.94
         48 |          2        0.02       99.96
         49 |          1        0.01       99.97
         51 |          1        0.01       99.98
         69 |          1        0.01       99.99
         71 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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