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

      ROUTE |
    SIGNING |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,303       13.03       13.03
          2 |      1,241       12.41       25.44
          3 |      2,830       28.30       53.74
          4 |      2,060       20.60       74.34
          5 |        108        1.08       75.42
          6 |      2,254       22.54       97.96
          7 |          8        0.08       98.04
          8 |         77        0.77       98.81
          9 |        119        1.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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