Frequencies for first 10,000 rows of pct012g145 variable in sf12000860us22 dataset :

   38 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,784       67.84       67.84
          1 |      1,368       13.68       81.52
          2 |        562        5.62       87.14
          3 |        316        3.16       90.30
          4 |        214        2.14       92.44
          5 |        144        1.44       93.88
          6 |        109        1.09       94.97
          7 |         72        0.72       95.69
          8 |         61        0.61       96.30
          9 |         56        0.56       96.86
         10 |         39        0.39       97.25
         11 |         32        0.32       97.57
         12 |         18        0.18       97.75
         13 |         17        0.17       97.92
         14 |         18        0.18       98.10
         15 |         15        0.15       98.25
         16 |         19        0.19       98.44
         17 |         21        0.21       98.65
         18 |         12        0.12       98.77
         19 |          3        0.03       98.80
         20 |          8        0.08       98.88
         21 |          8        0.08       98.96
         22 |          6        0.06       99.02
         23 |         11        0.11       99.13
         24 |          8        0.08       99.21
         25 |          5        0.05       99.26
         26 |          7        0.07       99.33
         27 |          4        0.04       99.37
         28 |          4        0.04       99.41
         29 |          6        0.06       99.47
         30 |          4        0.04       99.51
         31 |          6        0.06       99.57
         32 |          3        0.03       99.60
         33 |          2        0.02       99.62
         34 |          3        0.03       99.65
         35 |          2        0.02       99.67
         36 |          5        0.05       99.72
         37 |          2        0.02       99.74
         38 |          2        0.02       99.76
         39 |          2        0.02       99.78
         40 |          1        0.01       99.79
         41 |          2        0.02       99.81
         42 |          2        0.02       99.83
         43 |          2        0.02       99.85
         46 |          1        0.01       99.86
         47 |          3        0.03       99.89
         49 |          1        0.01       99.90
         51 |          1        0.01       99.91
         52 |          2        0.02       99.93
         54 |          2        0.02       99.95
         55 |          1        0.01       99.96
         57 |          1        0.01       99.97
         60 |          1        0.01       99.98
         68 |          1        0.01       99.99
         93 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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