Frequencies for first 10,000 rows of pct012g042 variable in sf12000860us22 dataset :

   39 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,827       68.27       68.27
          1 |      1,317       13.17       81.44
          2 |        586        5.86       87.30
          3 |        335        3.35       90.65
          4 |        185        1.85       92.50
          5 |        124        1.24       93.74
          6 |         99        0.99       94.73
          7 |         77        0.77       95.50
          8 |         72        0.72       96.22
          9 |         56        0.56       96.78
         10 |         35        0.35       97.13
         11 |         21        0.21       97.34
         12 |         28        0.28       97.62
         13 |         25        0.25       97.87
         14 |         21        0.21       98.08
         15 |         16        0.16       98.24
         16 |         15        0.15       98.39
         17 |         16        0.16       98.55
         18 |         14        0.14       98.69
         19 |         11        0.11       98.80
         20 |          8        0.08       98.88
         21 |          8        0.08       98.96
         22 |          8        0.08       99.04
         23 |          8        0.08       99.12
         24 |          9        0.09       99.21
         25 |          7        0.07       99.28
         26 |          3        0.03       99.31
         27 |          4        0.04       99.35
         28 |          2        0.02       99.37
         29 |          4        0.04       99.41
         30 |          5        0.05       99.46
         32 |          2        0.02       99.48
         33 |          4        0.04       99.52
         34 |          3        0.03       99.55
         35 |          3        0.03       99.58
         36 |          4        0.04       99.62
         37 |          4        0.04       99.66
         38 |          3        0.03       99.69
         39 |          3        0.03       99.72
         40 |          4        0.04       99.76
         41 |          1        0.01       99.77
         42 |          2        0.02       99.79
         43 |          1        0.01       99.80
         46 |          1        0.01       99.81
         48 |          1        0.01       99.82
         50 |          3        0.03       99.85
         54 |          1        0.01       99.86
         55 |          1        0.01       99.87
         56 |          3        0.03       99.90
         57 |          1        0.01       99.91
         59 |          3        0.03       99.94
         70 |          1        0.01       99.95
         72 |          1        0.01       99.96
         73 |          1        0.01       99.97
         78 |          1        0.01       99.98
         79 |          1        0.01       99.99
        116 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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