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

    EVENT 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        179        1.79        1.79
          2 |          1        0.01        1.80
          4 |          1        0.01        1.81
          5 |         27        0.27        2.08
          7 |         21        0.21        2.29
          8 |        987        9.87       12.16
          9 |        161        1.61       13.77
         10 |         18        0.18       13.95
         11 |         25        0.25       14.20
         12 |      4,597       45.97       60.17
         13 |          2        0.02       60.19
         14 |         16        0.16       60.35
         15 |         36        0.36       60.71
         16 |          2        0.02       60.73
         17 |          1        0.01       60.74
         18 |         30        0.30       61.04
         21 |          1        0.01       61.05
         23 |          1        0.01       61.06
         24 |          2        0.02       61.08
         25 |          6        0.06       61.14
         26 |          2        0.02       61.16
         27 |          2        0.02       61.18
         28 |          4        0.04       61.22
         29 |          3        0.03       61.25
         30 |          1        0.01       61.26
         33 |         23        0.23       61.49
         34 |          6        0.06       61.55
         35 |          2        0.02       61.57
         37 |          1        0.01       61.58
         42 |          4        0.04       61.62
         43 |          2        0.02       61.64
         44 |          4        0.04       61.68
         45 |          1        0.01       61.69
         46 |          1        0.01       61.70
         47 |          1        0.01       61.71
         49 |          3        0.03       61.74
         51 |          6        0.06       61.80
         53 |          3        0.03       61.83
         54 |        104        1.04       62.87
         60 |          1        0.01       62.88
         61 |         62        0.62       63.50
         63 |      1,775       17.75       81.25
         64 |        761        7.61       88.86
         65 |      1,091       10.91       99.77
         66 |          2        0.02       99.79
         67 |         10        0.10       99.89
         99 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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