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

       Last |
Accident,et |
    c-Month |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,604       46.04       46.04
          1 |        378        3.78       49.82
          2 |        424        4.24       54.06
          3 |        394        3.94       58.00
          4 |        357        3.57       61.57
          5 |        413        4.13       65.70
          6 |        417        4.17       69.87
          7 |        415        4.15       74.02
          8 |        400        4.00       78.02
          9 |        400        4.00       82.02
         10 |        389        3.89       85.91
         11 |        390        3.90       89.81
         12 |        385        3.85       93.66
         99 |        634        6.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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