Frequencies for first 10,000 rows of pct013e030 variable in sf12010860us35 dataset :

   15 to 17 |
      years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,370       93.70       93.70
          1 |        480        4.80       98.50
          2 |        102        1.02       99.52
          3 |         30        0.30       99.82
          4 |         11        0.11       99.93
          5 |          1        0.01       99.94
          6 |          1        0.01       99.95
          7 |          2        0.02       99.97
          8 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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