Frequencies for first 10,000 rows of acc_type variable in vehicle dataset :

 Crash Type |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         76        0.76        0.76
          1 |        894        8.94        9.70
          2 |        375        3.75       13.45
          3 |         29        0.29       13.74
          4 |          4        0.04       13.78
          5 |         76        0.76       14.54
          6 |        639        6.39       20.93
          7 |        398        3.98       24.91
          8 |         22        0.22       25.13
          9 |          3        0.03       25.16
         10 |         41        0.41       25.57
         11 |         46        0.46       26.03
         12 |         17        0.17       26.20
         13 |      1,386       13.86       40.06
         14 |         39        0.39       40.45
         15 |         23        0.23       40.68
         16 |          2        0.02       40.70
         20 |        134        1.34       42.04
         21 |        122        1.22       43.26
         22 |         12        0.12       43.38
         24 |        193        1.93       45.31
         25 |        185        1.85       47.16
         26 |          7        0.07       47.23
         27 |          1        0.01       47.24
         28 |         27        0.27       47.51
         29 |         27        0.27       47.78
         32 |         48        0.48       48.26
         33 |          4        0.04       48.30
         42 |         10        0.10       48.40
         44 |         52        0.52       48.92
         45 |        126        1.26       50.18
         46 |         35        0.35       50.53
         47 |         43        0.43       50.96
         48 |         70        0.70       51.66
         49 |          4        0.04       51.70
         50 |        412        4.12       55.82
         51 |        412        4.12       59.94
         52 |        150        1.50       61.44
         53 |          4        0.04       61.48
         58 |          1        0.01       61.49
         59 |          1        0.01       61.50
         62 |          8        0.08       61.58
         63 |          2        0.02       61.60
         64 |        229        2.29       63.89
         65 |        229        2.29       66.18
         66 |         64        0.64       66.82
         67 |          2        0.02       66.84
         68 |        330        3.30       70.14
         69 |        330        3.30       73.44
         70 |          5        0.05       73.49
         71 |          5        0.05       73.54
         72 |         27        0.27       73.81
         73 |         27        0.27       74.08
         76 |         18        0.18       74.26
         77 |         18        0.18       74.44
         78 |         12        0.12       74.56
         79 |         12        0.12       74.68
         80 |          4        0.04       74.72
         81 |          4        0.04       74.76
         82 |        156        1.56       76.32
         83 |        156        1.56       77.88
         84 |          6        0.06       77.94
         86 |        162        1.62       79.56
         87 |        162        1.62       81.18
         88 |        231        2.31       83.49
         89 |        231        2.31       85.80
         90 |         10        0.10       85.90
         91 |          4        0.04       85.94
         92 |         12        0.12       86.06
         93 |          6        0.06       86.12
         98 |      1,356       13.56       99.68
         99 |         32        0.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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