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

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,182       41.82       41.82
          1 |        392        3.92       45.74
          2 |        374        3.74       49.48
          3 |        450        4.50       53.98
          4 |        425        4.25       58.23
          5 |        493        4.93       63.16
          6 |        434        4.34       67.50
          7 |        406        4.06       71.56
          8 |        410        4.10       75.66
          9 |        390        3.90       79.56
         10 |        430        4.30       83.86
         11 |        398        3.98       87.84
         12 |        415        4.15       91.99
         99 |        801        8.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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