Frequencies for first 10,000 rows of pct012m161 variable in sf12000860us28 dataset :

   54 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,895       98.95       98.95
          1 |        100        1.00       99.95
          2 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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