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

       LAST |
ACCIDENT-YE |
         AR |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,250       52.50       52.50
         92 |        298        2.98       55.48
         93 |        939        9.39       64.87
         94 |      1,599       15.99       80.86
         95 |      1,432       14.32       95.18
         99 |        419        4.19       99.37
          . |         63        0.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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