Frequencies for first 10,000 rows of pct012m056 variable in sf12010860us32 dataset :

   53 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,835       98.35       98.35
          1 |        153        1.53       99.88
          2 |         10        0.10       99.98
          3 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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