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

       Last |
Accident,et |
     c-Year |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,072       30.72       30.72
         47 |          3        0.03       30.75
         48 |          1        0.01       30.76
         50 |          1        0.01       30.77
         52 |          1        0.01       30.78
         54 |          2        0.02       30.80
         55 |          1        0.01       30.81
         56 |          5        0.05       30.86
         59 |          4        0.04       30.90
         60 |          6        0.06       30.96
         61 |          8        0.08       31.04
         62 |          8        0.08       31.12
         63 |          6        0.06       31.18
         64 |          9        0.09       31.27
         65 |          8        0.08       31.35
         66 |         18        0.18       31.53
         67 |         18        0.18       31.71
         68 |         26        0.26       31.97
         69 |         59        0.59       32.56
         70 |         84        0.84       33.40
         71 |        224        2.24       35.64
         72 |        358        3.58       39.22
         73 |        532        5.32       44.54
         74 |      1,053       10.53       55.07
         75 |      2,141       21.41       76.48
         76 |      1,610       16.10       92.58
         99 |        742        7.42      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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