Frequencies for first 10,000 rows of pct012l204 variable in sf12000860us27 dataset :

   97 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,934       99.34       99.34
          1 |         61        0.61       99.95
          2 |          4        0.04       99.99
          4 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2017