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

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,421       54.21       54.21
          1 |        356        3.56       57.77
          2 |        312        3.12       60.89
          3 |        348        3.48       64.37
          4 |        364        3.64       68.01
          5 |        362        3.62       71.63
          6 |        355        3.55       75.18
          7 |        369        3.69       78.87
          8 |        346        3.46       82.33
          9 |        326        3.26       85.59
         10 |        346        3.46       89.05
         11 |        297        2.97       92.02
         12 |        347        3.47       95.49
         99 |        399        3.99       99.48
          . |         52        0.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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