Frequencies for first 10,000 rows of pct012k127 variable in sf12000860us26 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,936       89.36       89.36
          1 |        755        7.55       96.91
          2 |        169        1.69       98.60
          3 |         58        0.58       99.18
          4 |         37        0.37       99.55
          5 |         15        0.15       99.70
          6 |          4        0.04       99.74
          7 |          8        0.08       99.82
          8 |          2        0.02       99.84
          9 |          4        0.04       99.88
         12 |          1        0.01       99.89
         14 |          1        0.01       99.90
         16 |          1        0.01       99.91
         18 |          1        0.01       99.92
         23 |          1        0.01       99.93
         28 |          1        0.01       99.94
         31 |          1        0.01       99.95
         34 |          1        0.01       99.96
         60 |          1        0.01       99.97
         75 |          1        0.01       99.98
         78 |          1        0.01       99.99
         83 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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