Frequencies for first 10,000 rows of year variable in accident dataset :

   Accident |
  Date-Year |      Freq.     Percent        Cum.
------------+-----------------------------------
         90 |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016