Frequencies for first 10,000 rows of pct013e007 variable in sf12000860us31 dataset :

  18 and 19 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,471       94.71       94.71
          1 |        412        4.12       98.83
          2 |         73        0.73       99.56
          3 |         31        0.31       99.87
          4 |          8        0.08       99.95
          5 |          2        0.02       99.97
          6 |          1        0.01       99.98
          7 |          1        0.01       99.99
          8 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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