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

    EVENT 6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,526       95.26       95.26
          1 |        128        1.28       96.54
          2 |         39        0.39       96.93
          3 |         11        0.11       97.04
          8 |          9        0.09       97.13
          9 |          1        0.01       97.14
         12 |         14        0.14       97.28
         13 |         11        0.11       97.39
         14 |         20        0.20       97.59
         18 |          3        0.03       97.62
         19 |          5        0.05       97.67
         21 |          3        0.03       97.70
         23 |          1        0.01       97.71
         24 |          7        0.07       97.78
         25 |          5        0.05       97.83
         26 |          1        0.01       97.84
         27 |          3        0.03       97.87
         29 |          2        0.02       97.89
         30 |          9        0.09       97.98
         31 |          3        0.03       98.01
         32 |          1        0.01       98.02
         33 |          2        0.02       98.04
         34 |          5        0.05       98.09
         35 |          6        0.06       98.15
         37 |          3        0.03       98.18
         38 |         21        0.21       98.39
         39 |          5        0.05       98.44
         40 |          3        0.03       98.47
         41 |          1        0.01       98.48
         42 |         66        0.66       99.14
         43 |         14        0.14       99.28
         46 |          1        0.01       99.29
         47 |          1        0.01       99.30
         53 |          1        0.01       99.31
         54 |         12        0.12       99.43
         60 |          3        0.03       99.46
         62 |          2        0.02       99.48
         63 |          1        0.01       99.49
         64 |          4        0.04       99.53
         67 |          2        0.02       99.55
         99 |         45        0.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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