Frequencies for first 10,000 rows of pct013e009 variable in sf12010860us35 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,651       96.51       96.51
          1 |        286        2.86       99.37
          2 |         48        0.48       99.85
          3 |         11        0.11       99.96
          4 |          1        0.01       99.97
          5 |          1        0.01       99.98
          6 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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