Frequencies for first 10,000 rows of pct012m140 variable in sf12010860us32 dataset :

   33 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,760       97.60       97.60
          1 |        209        2.09       99.69
          2 |         24        0.24       99.93
          3 |          4        0.04       99.97
          4 |          2        0.02       99.99
          6 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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