Frequencies for first 10,000 rows of ta_1_cl variable in accident dataset :

 TA-1 Class |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        932        9.32        9.32
          2 |      2,686       26.86       36.18
          3 |      1,073       10.73       46.91
          4 |      2,138       21.38       68.29
          5 |         83        0.83       69.12
          6 |      1,104       11.04       80.16
          7 |      1,029       10.29       90.45
          8 |        941        9.41       99.86
          9 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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