Frequencies for first 10,000 rows of pct012m194 variable in sf12010880us32 dataset :

   87 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,988       99.88       99.88
          1 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017