Frequencies for first 10,000 rows of pct012m136 variable in sf12010880us32 dataset :

   29 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,823       98.23       98.23
          1 |        152        1.52       99.75
          2 |         18        0.18       99.93
          3 |          4        0.04       99.97
          4 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017