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

       LAST |
ACCIDENT-YE |
         AR |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,317       53.17       53.17
         94 |        280        2.80       55.97
         95 |        915        9.15       65.12
         96 |      1,656       16.56       81.68
         97 |      1,380       13.80       95.48
         99 |        373        3.73       99.21
          . |         79        0.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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