Frequencies for first 10,000 rows of pct012n127 variable in sf12000860us29 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,151       91.51       91.51
          1 |        533        5.33       96.84
          2 |        143        1.43       98.27
          3 |         60        0.60       98.87
          4 |         35        0.35       99.22
          5 |         21        0.21       99.43
          6 |          6        0.06       99.49
          7 |          7        0.07       99.56
          8 |         10        0.10       99.66
          9 |          2        0.02       99.68
         10 |          1        0.01       99.69
         11 |          7        0.07       99.76
         12 |          2        0.02       99.78
         13 |          2        0.02       99.80
         14 |          1        0.01       99.81
         15 |          2        0.02       99.83
         16 |          1        0.01       99.84
         17 |          2        0.02       99.86
         19 |          1        0.01       99.87
         20 |          1        0.01       99.88
         21 |          1        0.01       99.89
         23 |          1        0.01       99.90
         28 |          1        0.01       99.91
         31 |          1        0.01       99.92
         33 |          1        0.01       99.93
         39 |          1        0.01       99.94
         42 |          1        0.01       99.95
         65 |          1        0.01       99.96
         70 |          1        0.01       99.97
         81 |          1        0.01       99.98
        108 |          1        0.01       99.99
        146 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017