Frequencies for first 10,000 rows of pct012e060 variable in sf12000860us20 dataset :

   57 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,880       98.80       98.80
          1 |        112        1.12       99.92
          2 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017