Frequencies for first 10,000 rows of pct013e007 variable in sf12010860us35 dataset :

  18 and 19 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,508       95.08       95.08
          1 |        381        3.81       98.89
          2 |         72        0.72       99.61
          3 |         24        0.24       99.85
          4 |          9        0.09       99.94
          5 |          3        0.03       99.97
          7 |          1        0.01       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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