Frequencies for first 10,000 rows of pct012m031 variable in sf12010860us32 dataset :

   28 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,725       97.25       97.25
          1 |        238        2.38       99.63
          2 |         28        0.28       99.91
          3 |          4        0.04       99.95
          4 |          4        0.04       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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