Frequencies for first 10,000 rows of pct012o061 variable in sf12000860us30 dataset :

   58 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,120       81.20       81.20
          1 |      1,205       12.05       93.25
          2 |        346        3.46       96.71
          3 |        141        1.41       98.12
          4 |         64        0.64       98.76
          5 |         41        0.41       99.17
          6 |         29        0.29       99.46
          7 |          7        0.07       99.53
          8 |         11        0.11       99.64
          9 |         11        0.11       99.75
         10 |          3        0.03       99.78
         11 |          3        0.03       99.81
         12 |          8        0.08       99.89
         13 |          2        0.02       99.91
         14 |          2        0.02       99.93
         15 |          3        0.03       99.96
         16 |          1        0.01       99.97
         20 |          1        0.01       99.98
         22 |          1        0.01       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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