Frequencies for first 10,000 rows of pct012g138 variable in sf12000860us22 dataset :

   31 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,914       69.14       69.14
          1 |      1,266       12.66       81.80
          2 |        499        4.99       86.79
          3 |        297        2.97       89.76
          4 |        209        2.09       91.85
          5 |        156        1.56       93.41
          6 |         98        0.98       94.39
          7 |         85        0.85       95.24
          8 |         67        0.67       95.91
          9 |         64        0.64       96.55
         10 |         42        0.42       96.97
         11 |         26        0.26       97.23
         12 |         30        0.30       97.53
         13 |         19        0.19       97.72
         14 |         17        0.17       97.89
         15 |         18        0.18       98.07
         16 |         18        0.18       98.25
         17 |         13        0.13       98.38
         18 |         16        0.16       98.54
         19 |         10        0.10       98.64
         20 |         10        0.10       98.74
         21 |         10        0.10       98.84
         22 |          5        0.05       98.89
         23 |         12        0.12       99.01
         24 |          9        0.09       99.10
         25 |          7        0.07       99.17
         26 |          7        0.07       99.24
         27 |          9        0.09       99.33
         28 |          4        0.04       99.37
         29 |          3        0.03       99.40
         30 |          3        0.03       99.43
         31 |          6        0.06       99.49
         32 |          4        0.04       99.53
         33 |          5        0.05       99.58
         34 |          1        0.01       99.59
         35 |          6        0.06       99.65
         36 |          6        0.06       99.71
         37 |          5        0.05       99.76
         38 |          1        0.01       99.77
         41 |          1        0.01       99.78
         43 |          1        0.01       99.79
         44 |          1        0.01       99.80
         45 |          1        0.01       99.81
         46 |          3        0.03       99.84
         48 |          1        0.01       99.85
         49 |          1        0.01       99.86
         50 |          2        0.02       99.88
         51 |          3        0.03       99.91
         52 |          1        0.01       99.92
         53 |          1        0.01       99.93
         55 |          1        0.01       99.94
         57 |          2        0.02       99.96
         63 |          2        0.02       99.98
         72 |          1        0.01       99.99
         89 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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