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

       Last |
Accident,et |
     c-Year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,993       39.93       39.93
         75 |          1        0.01       39.94
         76 |        380        3.80       43.74
         77 |      1,032       10.32       54.06
         78 |      2,242       22.42       76.48
         79 |      1,452       14.52       91.00
         99 |        900        9.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016