Frequencies for first 10,000 rows of pct012m054 variable in sf12000860us28 dataset :

   51 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,874       98.74       98.74
          1 |        122        1.22       99.96
          2 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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