Frequencies for first 10,000 rows of pct012m172 variable in sf12000860us28 dataset :

   65 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,948       99.48       99.48
          1 |         47        0.47       99.95
          2 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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