Frequencies for first 10,000 rows of route variable in accident dataset :

      Route |
    Signing |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,274       12.74       12.74
          2 |      1,282       12.82       25.56
          3 |      2,667       26.67       52.23
          4 |      2,079       20.79       73.02
          5 |         85        0.85       73.87
          6 |      2,394       23.94       97.81
          7 |          9        0.09       97.90
          8 |        120        1.20       99.10
          9 |         90        0.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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