Frequencies for first 10,000 rows of pct012c107 variable in sf12010860us22 dataset :

    Under 1 |
       year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,527       85.27       85.27
          1 |        869        8.69       93.96
          2 |        271        2.71       96.67
          3 |        150        1.50       98.17
          4 |         63        0.63       98.80
          5 |         44        0.44       99.24
          6 |         22        0.22       99.46
          7 |         16        0.16       99.62
          8 |          4        0.04       99.66
          9 |          4        0.04       99.70
         10 |          5        0.05       99.75
         11 |          4        0.04       99.79
         12 |          2        0.02       99.81
         13 |          1        0.01       99.82
         15 |          1        0.01       99.83
         16 |          2        0.02       99.85
         17 |          2        0.02       99.87
         18 |          1        0.01       99.88
         19 |          1        0.01       99.89
         20 |          1        0.01       99.90
         30 |          1        0.01       99.91
         35 |          2        0.02       99.93
         37 |          1        0.01       99.94
         44 |          1        0.01       99.95
         49 |          1        0.01       99.96
         67 |          1        0.01       99.97
         69 |          1        0.01       99.98
         78 |          1        0.01       99.99
         81 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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