Frequencies for first 10,000 rows of seq4 variable in vehicle dataset :

    EVENT 4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,639       76.39       76.39
          1 |        616        6.16       82.55
          2 |         71        0.71       83.26
          3 |         24        0.24       83.50
          5 |          2        0.02       83.52
          7 |          5        0.05       83.57
          8 |         30        0.30       83.87
          9 |          2        0.02       83.89
         11 |          1        0.01       83.90
         12 |        124        1.24       85.14
         13 |         21        0.21       85.35
         14 |         39        0.39       85.74
         17 |         24        0.24       85.98
         18 |          7        0.07       86.05
         19 |          9        0.09       86.14
         20 |          1        0.01       86.15
         21 |         10        0.10       86.25
         22 |          1        0.01       86.26
         23 |          9        0.09       86.35
         24 |         40        0.40       86.75
         25 |         26        0.26       87.01
         26 |          3        0.03       87.04
         27 |         50        0.50       87.54
         28 |          2        0.02       87.56
         29 |         16        0.16       87.72
         30 |         63        0.63       88.35
         31 |         17        0.17       88.52
         32 |         13        0.13       88.65
         33 |         47        0.47       89.12
         34 |         72        0.72       89.84
         35 |         49        0.49       90.33
         36 |         14        0.14       90.47
         37 |         20        0.20       90.67
         38 |        118        1.18       91.85
         39 |         30        0.30       92.15
         40 |         13        0.13       92.28
         41 |         21        0.21       92.49
         42 |        263        2.63       95.12
         43 |         57        0.57       95.69
         46 |         19        0.19       95.88
         47 |          2        0.02       95.90
         48 |          1        0.01       95.91
         51 |          8        0.08       95.99
         52 |          2        0.02       96.01
         53 |          9        0.09       96.10
         54 |         27        0.27       96.37
         60 |         13        0.13       96.50
         62 |          4        0.04       96.54
         63 |         78        0.78       97.32
         64 |         97        0.97       98.29
         65 |         60        0.60       98.89
         66 |          1        0.01       98.90
         67 |         91        0.91       99.81
         99 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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