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

      route |
    signing |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,174       11.74       11.74
          2 |      1,327       13.27       25.01
          3 |      2,529       25.29       50.30
          4 |      1,409       14.09       64.39
          5 |         42        0.42       64.81
          6 |      2,242       22.42       87.23
          7 |         13        0.13       87.36
          8 |         95        0.95       88.31
          9 |      1,169       11.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016