Frequencies for first 10,000 rows of last_yr variable in vehicle dataset :

       Last |
Accident,et |
     c-Year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,233       42.33       42.33
         82 |        372        3.72       46.05
         83 |      1,126       11.26       57.31
         84 |      2,074       20.74       78.05
         85 |      1,520       15.20       93.25
         99 |        675        6.75      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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