Frequencies for first 10,000 rows of pct012o135 variable in sf12000860us30 dataset :

   28 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,333       73.33       73.33
          1 |      1,170       11.70       85.03
          2 |        476        4.76       89.79
          3 |        261        2.61       92.40
          4 |        186        1.86       94.26
          5 |        127        1.27       95.53
          6 |         83        0.83       96.36
          7 |         64        0.64       97.00
          8 |         57        0.57       97.57
          9 |         38        0.38       97.95
         10 |         38        0.38       98.33
         11 |         29        0.29       98.62
         12 |         19        0.19       98.81
         13 |         16        0.16       98.97
         14 |         11        0.11       99.08
         15 |          9        0.09       99.17
         16 |         11        0.11       99.28
         17 |         10        0.10       99.38
         18 |          8        0.08       99.46
         19 |          9        0.09       99.55
         20 |          6        0.06       99.61
         21 |          8        0.08       99.69
         23 |          5        0.05       99.74
         24 |          3        0.03       99.77
         25 |          2        0.02       99.79
         26 |          2        0.02       99.81
         27 |          5        0.05       99.86
         29 |          4        0.04       99.90
         30 |          1        0.01       99.91
         32 |          2        0.02       99.93
         33 |          1        0.01       99.94
         34 |          1        0.01       99.95
         37 |          1        0.01       99.96
         38 |          1        0.01       99.97
         39 |          1        0.01       99.98
         47 |          1        0.01       99.99
         75 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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