Frequencies for first 10,000 rows of pct012c018 variable in sf12010860us22 dataset :

   15 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,339       83.39       83.39
          1 |        993        9.93       93.32
          2 |        335        3.35       96.67
          3 |        146        1.46       98.13
          4 |         61        0.61       98.74
          5 |         39        0.39       99.13
          6 |         22        0.22       99.35
          7 |         10        0.10       99.45
          8 |         15        0.15       99.60
          9 |          4        0.04       99.64
         10 |          3        0.03       99.67
         11 |          4        0.04       99.71
         12 |          5        0.05       99.76
         13 |          3        0.03       99.79
         14 |          3        0.03       99.82
         15 |          3        0.03       99.85
         16 |          3        0.03       99.88
         22 |          1        0.01       99.89
         23 |          1        0.01       99.90
         26 |          1        0.01       99.91
         30 |          1        0.01       99.92
         39 |          1        0.01       99.93
         50 |          1        0.01       99.94
         53 |          1        0.01       99.95
         56 |          1        0.01       99.96
         70 |          1        0.01       99.97
         77 |          1        0.01       99.98
         86 |          1        0.01       99.99
        103 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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