Frequencies for first 10,000 rows of p012e031 variable in sf12010860us7 dataset :

  18 and 19 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,408       94.08       94.08
          1 |        462        4.62       98.70
          2 |         85        0.85       99.55
          3 |         24        0.24       99.79
          4 |         11        0.11       99.90
          5 |          2        0.02       99.92
          6 |          2        0.02       99.94
          7 |          2        0.02       99.96
          8 |          1        0.01       99.97
          9 |          1        0.01       99.98
         11 |          1        0.01       99.99
         14 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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