Frequencies for first 10,000 rows of seq6 variable in vehicle dataset :

    EVENT 6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,462       94.62       94.62
          1 |        147        1.47       96.09
          2 |         39        0.39       96.48
          3 |         12        0.12       96.60
          7 |          1        0.01       96.61
          8 |         11        0.11       96.72
         12 |         14        0.14       96.86
         13 |          7        0.07       96.93
         14 |         17        0.17       97.10
         17 |          4        0.04       97.14
         18 |          7        0.07       97.21
         19 |          7        0.07       97.28
         21 |          2        0.02       97.30
         24 |          8        0.08       97.38
         25 |          5        0.05       97.43
         27 |          3        0.03       97.46
         29 |          8        0.08       97.54
         30 |          8        0.08       97.62
         31 |          4        0.04       97.66
         32 |          2        0.02       97.68
         33 |          2        0.02       97.70
         34 |         13        0.13       97.83
         35 |         13        0.13       97.96
         36 |          2        0.02       97.98
         37 |          2        0.02       98.00
         38 |         27        0.27       98.27
         39 |          9        0.09       98.36
         40 |          1        0.01       98.37
         41 |          3        0.03       98.40
         42 |         71        0.71       99.11
         43 |          8        0.08       99.19
         46 |          1        0.01       99.20
         51 |          1        0.01       99.21
         53 |          2        0.02       99.23
         54 |          2        0.02       99.25
         60 |          1        0.01       99.26
         63 |          3        0.03       99.29
         64 |          5        0.05       99.34
         65 |          3        0.03       99.37
         67 |          4        0.04       99.41
         99 |         59        0.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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