Frequencies for first 10,000 rows of pct012c203 variable in sf12000860us18 dataset :

   96 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,983       99.83       99.83
          1 |         15        0.15       99.98
          2 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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