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

       LAST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,364       53.64       53.64
          1 |        332        3.32       56.96
          2 |        314        3.14       60.10
          3 |        335        3.35       63.45
          4 |        349        3.49       66.94
          5 |        351        3.51       70.45
          6 |        340        3.40       73.85
          7 |        351        3.51       77.36
          8 |        333        3.33       80.69
          9 |        338        3.38       84.07
         10 |        334        3.34       87.41
         11 |        302        3.02       90.43
         12 |        322        3.22       93.65
         99 |        572        5.72       99.37
          . |         63        0.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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