Frequencies for first 10,000 rows of pct013e031 variable in sf12000860us31 dataset :

  18 and 19 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,540       95.40       95.40
          1 |        371        3.71       99.11
          2 |         65        0.65       99.76
          3 |         16        0.16       99.92
          4 |          6        0.06       99.98
          5 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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