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

       LAST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,515       55.15       55.15
          1 |        310        3.10       58.25
          2 |        329        3.29       61.54
          3 |        353        3.53       65.07
          4 |        331        3.31       68.38
          5 |        356        3.56       71.94
          6 |        313        3.13       75.07
          7 |        374        3.74       78.81
          8 |        367        3.67       82.48
          9 |        329        3.29       85.77
         10 |        359        3.59       89.36
         11 |        310        3.10       92.46
         12 |        311        3.11       95.57
         99 |        381        3.81       99.38
          . |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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