Frequencies for first 10,000 rows of pct012e049 variable in sf12000860us20 dataset :

   46 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,777       97.77       97.77
          1 |        210        2.10       99.87
          2 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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