Frequencies for first 10,000 rows of prov5055 variable in posclia1998 dataset :

   prov5055 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,995       99.95       99.95
   19941020 |          4        0.04       99.99
   19960206 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016