Frequencies for first 10,000 rows of pct012o142 variable in sf12010860us34 dataset :

   35 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,882       68.82       68.82
          1 |      1,331       13.31       82.13
          2 |        616        6.16       88.29
          3 |        340        3.40       91.69
          4 |        263        2.63       94.32
          5 |        171        1.71       96.03
          6 |         88        0.88       96.91
          7 |         88        0.88       97.79
          8 |         56        0.56       98.35
          9 |         44        0.44       98.79
         10 |         30        0.30       99.09
         11 |         20        0.20       99.29
         12 |         17        0.17       99.46
         13 |         13        0.13       99.59
         14 |         11        0.11       99.70
         15 |          6        0.06       99.76
         16 |         12        0.12       99.88
         17 |          1        0.01       99.89
         19 |          3        0.03       99.92
         20 |          1        0.01       99.93
         21 |          2        0.02       99.95
         22 |          1        0.01       99.96
         25 |          2        0.02       99.98
         26 |          1        0.01       99.99
         45 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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