Frequencies for first 10,000 rows of pct012e010 variable in sf12010880us24 dataset :

    7 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,822       98.22       98.22
          1 |        159        1.59       99.81
          2 |         16        0.16       99.97
          3 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017