Frequencies for first 10,000 rows of pct012m081 variable in sf12000860us28 dataset :

   78 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,982       99.82       99.82
          1 |         17        0.17       99.99
          3 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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