Frequencies for first 10,000 rows of pct012m056 variable in sf12000860us28 dataset :

   53 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,876       98.76       98.76
          1 |        120        1.20       99.96
          2 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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