Frequencies for first 10,000 rows of p039c013 variable in sf12010880us13 dataset :

    6 to 17 |
 years only |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,700       87.00       87.00
          1 |        852        8.52       95.52
          2 |        226        2.26       97.78
          3 |         99        0.99       98.77
          4 |         46        0.46       99.23
          5 |         20        0.20       99.43
          6 |         16        0.16       99.59
          7 |         13        0.13       99.72
          8 |         10        0.10       99.82
          9 |          2        0.02       99.84
         10 |          2        0.02       99.86
         11 |          2        0.02       99.88
         12 |          3        0.03       99.91
         13 |          2        0.02       99.93
         15 |          2        0.02       99.95
         17 |          3        0.03       99.98
         18 |          1        0.01       99.99
         58 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017