Frequencies for first 10,000 rows of pct012e120 variable in sf12010860us24 dataset :

   13 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,755       97.55       97.55
          1 |        216        2.16       99.71
          2 |         22        0.22       99.93
          3 |          6        0.06       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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