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

    Traffic |
   Controls |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,534       65.34       65.34
          1 |         36        0.36       65.70
          2 |        714        7.14       72.84
          3 |        896        8.96       81.80
          4 |         24        0.24       82.04
          5 |         30        0.30       82.34
          6 |         11        0.11       82.45
          7 |         41        0.41       82.86
          8 |          2        0.02       82.88
          9 |          8        0.08       82.96
         10 |         23        0.23       83.19
         98 |      1,613       16.13       99.32
         99 |         68        0.68      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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