Frequencies for first 10,000 rows of seq3 variable in vehicle dataset :

    EVENT 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,928       59.28       59.28
          1 |        802        8.02       67.30
          2 |         88        0.88       68.18
          3 |         16        0.16       68.34
          5 |          1        0.01       68.35
          6 |          2        0.02       68.37
          7 |          3        0.03       68.40
          8 |         52        0.52       68.92
          9 |          6        0.06       68.98
         11 |          1        0.01       68.99
         12 |        363        3.63       72.62
         13 |         26        0.26       72.88
         14 |         50        0.50       73.38
         15 |          1        0.01       73.39
         17 |         26        0.26       73.65
         18 |         15        0.15       73.80
         19 |         14        0.14       73.94
         20 |          8        0.08       74.02
         21 |         15        0.15       74.17
         22 |          1        0.01       74.18
         23 |         19        0.19       74.37
         24 |         88        0.88       75.25
         25 |         56        0.56       75.81
         26 |          2        0.02       75.83
         27 |         87        0.87       76.70
         28 |          8        0.08       76.78
         29 |         38        0.38       77.16
         30 |        100        1.00       78.16
         31 |         46        0.46       78.62
         32 |         36        0.36       78.98
         33 |        191        1.91       80.89
         34 |        114        1.14       82.03
         35 |         74        0.74       82.77
         36 |          9        0.09       82.86
         37 |         23        0.23       83.09
         38 |        139        1.39       84.48
         39 |         45        0.45       84.93
         40 |         11        0.11       85.04
         41 |         23        0.23       85.27
         42 |        364        3.64       88.91
         43 |         56        0.56       89.47
         45 |          1        0.01       89.48
         46 |         24        0.24       89.72
         47 |          4        0.04       89.76
         48 |          3        0.03       89.79
         49 |          1        0.01       89.80
         51 |         17        0.17       89.97
         52 |          5        0.05       90.02
         53 |         26        0.26       90.28
         54 |         33        0.33       90.61
         57 |          6        0.06       90.67
         60 |          3        0.03       90.70
         61 |          5        0.05       90.75
         62 |          4        0.04       90.79
         63 |        217        2.17       92.96
         64 |        401        4.01       96.97
         65 |        157        1.57       98.54
         67 |        134        1.34       99.88
         99 |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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