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

       LAST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,232       52.32       52.32
          1 |        331        3.31       55.63
          2 |        309        3.09       58.72
          3 |        371        3.71       62.43
          4 |        381        3.81       66.24
          5 |        319        3.19       69.43
          6 |        364        3.64       73.07
          7 |        367        3.67       76.74
          8 |        391        3.91       80.65
          9 |        377        3.77       84.42
         10 |        344        3.44       87.86
         11 |        288        2.88       90.74
         12 |        371        3.71       94.45
         99 |        555        5.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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