Frequencies for first 10,000 rows of pct012m023 variable in sf12010860us32 dataset :

   20 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,702       97.02       97.02
          1 |        237        2.37       99.39
          2 |         42        0.42       99.81
          3 |         13        0.13       99.94
          4 |          1        0.01       99.95
          5 |          2        0.02       99.97
          6 |          1        0.01       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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