Frequencies for first 10,000 rows of seq1 variable in vehicle dataset :

    EVENT 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        140        1.40        1.40
          2 |          2        0.02        1.42
          3 |          1        0.01        1.43
          5 |         30        0.30        1.73
          6 |          1        0.01        1.74
          7 |          7        0.07        1.81
          8 |        924        9.24       11.05
          9 |        156        1.56       12.61
         10 |         27        0.27       12.88
         11 |         13        0.13       13.01
         12 |      4,769       47.69       60.70
         13 |          8        0.08       60.78
         14 |         15        0.15       60.93
         15 |         24        0.24       61.17
         16 |          8        0.08       61.25
         18 |         26        0.26       61.51
         19 |          1        0.01       61.52
         20 |          1        0.01       61.53
         23 |          4        0.04       61.57
         24 |          8        0.08       61.65
         25 |          8        0.08       61.73
         26 |          1        0.01       61.74
         29 |          2        0.02       61.76
         30 |          3        0.03       61.79
         31 |          1        0.01       61.80
         32 |          1        0.01       61.81
         33 |         46        0.46       62.27
         34 |          1        0.01       62.28
         35 |          2        0.02       62.30
         36 |          2        0.02       62.32
         38 |          1        0.01       62.33
         39 |          1        0.01       62.34
         42 |          2        0.02       62.36
         43 |          4        0.04       62.40
         44 |          1        0.01       62.41
         45 |          4        0.04       62.45
         47 |          3        0.03       62.48
         49 |          1        0.01       62.49
         51 |          3        0.03       62.52
         54 |        110        1.10       63.62
         60 |          5        0.05       63.67
         61 |         60        0.60       64.27
         62 |          3        0.03       64.30
         63 |      1,610       16.10       80.40
         64 |        679        6.79       87.19
         65 |      1,227       12.27       99.46
         66 |          4        0.04       99.50
         67 |          9        0.09       99.59
         99 |         41        0.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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