Frequencies for first 10,000 rows of pct012e125 variable in sf12000860us20 dataset :

   18 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,696       96.96       96.96
          1 |        248        2.48       99.44
          2 |         45        0.45       99.89
          3 |          2        0.02       99.91
          4 |          4        0.04       99.95
          5 |          1        0.01       99.96
          6 |          1        0.01       99.97
          7 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017