Frequencies for first 10,000 rows of pct012o029 variable in sf12010860us34 dataset :

   26 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,977       69.77       69.77
          1 |      1,262       12.62       82.39
          2 |        565        5.65       88.04
          3 |        315        3.15       91.19
          4 |        240        2.40       93.59
          5 |        142        1.42       95.01
          6 |        124        1.24       96.25
          7 |         92        0.92       97.17
          8 |         58        0.58       97.75
          9 |         54        0.54       98.29
         10 |         37        0.37       98.66
         11 |         26        0.26       98.92
         12 |         20        0.20       99.12
         13 |         19        0.19       99.31
         14 |         11        0.11       99.42
         15 |         11        0.11       99.53
         16 |         13        0.13       99.66
         17 |          6        0.06       99.72
         18 |          4        0.04       99.76
         19 |          7        0.07       99.83
         20 |          2        0.02       99.85
         21 |          3        0.03       99.88
         22 |          1        0.01       99.89
         23 |          3        0.03       99.92
         24 |          3        0.03       99.95
         25 |          1        0.01       99.96
         27 |          1        0.01       99.97
         28 |          1        0.01       99.98
         30 |          1        0.01       99.99
         39 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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