Frequencies for first 10,000 rows of prov5045 variable in posclia1999 dataset :

   prov5045 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,993       99.93       99.93
   19950721 |          4        0.04       99.97
   19980422 |          2        0.02       99.99
   19990806 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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