Frequencies for first 10,000 rows of pct013g009 variable in sf12000860us32 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,967       69.67       69.67
          1 |      1,165       11.65       81.32
          2 |        475        4.75       86.07
          3 |        318        3.18       89.25
          4 |        211        2.11       91.36
          5 |        144        1.44       92.80
          6 |        107        1.07       93.87
          7 |         80        0.80       94.67
          8 |         79        0.79       95.46
          9 |         45        0.45       95.91
         10 |         44        0.44       96.35
         11 |         45        0.45       96.80
         12 |         38        0.38       97.18
         13 |         27        0.27       97.45
         14 |         28        0.28       97.73
         15 |         22        0.22       97.95
         16 |         24        0.24       98.19
         17 |         18        0.18       98.37
         18 |         15        0.15       98.52
         19 |         12        0.12       98.64
         20 |         13        0.13       98.77
         21 |         12        0.12       98.89
         22 |          5        0.05       98.94
         23 |         11        0.11       99.05
         24 |         12        0.12       99.17
         25 |          6        0.06       99.23
         26 |          6        0.06       99.29
         27 |          9        0.09       99.38
         28 |          4        0.04       99.42
         29 |          4        0.04       99.46
         30 |          2        0.02       99.48
         31 |          1        0.01       99.49
         32 |          1        0.01       99.50
         33 |          5        0.05       99.55
         34 |          5        0.05       99.60
         36 |          4        0.04       99.64
         37 |          3        0.03       99.67
         38 |          2        0.02       99.69
         39 |          1        0.01       99.70
         40 |          5        0.05       99.75
         41 |          1        0.01       99.76
         42 |          7        0.07       99.83
         43 |          4        0.04       99.87
         44 |          1        0.01       99.88
         45 |          4        0.04       99.92
         46 |          1        0.01       99.93
         47 |          1        0.01       99.94
         49 |          2        0.02       99.96
         51 |          1        0.01       99.97
         54 |          1        0.01       99.98
         60 |          1        0.01       99.99
         96 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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