Frequencies for first 10,000 rows of pct012o018 variable in sf12000860us30 dataset :

   15 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,609       66.09       66.09
          1 |      1,445       14.45       80.54
          2 |        640        6.40       86.94
          3 |        358        3.58       90.52
          4 |        254        2.54       93.06
          5 |        182        1.82       94.88
          6 |        116        1.16       96.04
          7 |        103        1.03       97.07
          8 |         61        0.61       97.68
          9 |         46        0.46       98.14
         10 |         31        0.31       98.45
         11 |         41        0.41       98.86
         12 |         24        0.24       99.10
         13 |         15        0.15       99.25
         14 |          9        0.09       99.34
         15 |         11        0.11       99.45
         16 |          9        0.09       99.54
         17 |         11        0.11       99.65
         18 |          7        0.07       99.72
         19 |          4        0.04       99.76
         20 |          2        0.02       99.78
         21 |          4        0.04       99.82
         22 |          1        0.01       99.83
         23 |          3        0.03       99.86
         24 |          1        0.01       99.87
         25 |          2        0.02       99.89
         27 |          2        0.02       99.91
         28 |          1        0.01       99.92
         29 |          1        0.01       99.93
         30 |          3        0.03       99.96
         34 |          1        0.01       99.97
         38 |          1        0.01       99.98
         48 |          1        0.01       99.99
         74 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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