Frequencies for last_yr variable in vehicle dataset :

       LAST |
ACCIDENT-YE |
         AR |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        444       62.01       62.01
       1995 |         75       10.47       72.49
       1996 |        129       18.02       90.50
       1997 |         14        1.96       92.46
       1998 |          9        1.26       93.72
       9999 |         42        5.87       99.58
          . |          3        0.42      100.00
------------+-----------------------------------
      Total |        716      100.00

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