Frequencies for first 10,000 rows of pct012m155 variable in sf12010880us32 dataset :

   48 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,854       98.54       98.54
          1 |        136        1.36       99.90
          2 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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