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

    EVENT 4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        482        4.82        4.82
          2 |         50        0.50        5.32
          3 |         22        0.22        5.54
          4 |          1        0.01        5.55
          5 |          1        0.01        5.56
          7 |          5        0.05        5.61
          8 |         16        0.16        5.77
          9 |          1        0.01        5.78
         12 |        107        1.07        6.85
         13 |         26        0.26        7.11
         14 |         35        0.35        7.46
         15 |          1        0.01        7.47
         17 |         14        0.14        7.61
         18 |          3        0.03        7.64
         19 |         11        0.11        7.75
         21 |          8        0.08        7.83
         23 |         11        0.11        7.94
         24 |         42        0.42        8.36
         25 |         16        0.16        8.52
         26 |          3        0.03        8.55
         27 |         43        0.43        8.98
         28 |          1        0.01        8.99
         29 |         11        0.11        9.10
         30 |         44        0.44        9.54
         31 |         26        0.26        9.80
         32 |          5        0.05        9.85
         33 |         30        0.30       10.15
         34 |         41        0.41       10.56
         35 |         51        0.51       11.07
         36 |          8        0.08       11.15
         37 |         11        0.11       11.26
         38 |        123        1.23       12.49
         39 |         19        0.19       12.68
         40 |          5        0.05       12.73
         41 |         18        0.18       12.91
         42 |        227        2.27       15.18
         43 |         40        0.40       15.58
         45 |          1        0.01       15.59
         46 |         19        0.19       15.78
         47 |          3        0.03       15.81
         50 |          3        0.03       15.84
         51 |          7        0.07       15.91
         52 |          2        0.02       15.93
         53 |          6        0.06       15.99
         54 |          2        0.02       16.01
         60 |          4        0.04       16.05
         61 |          1        0.01       16.06
         62 |          5        0.05       16.11
         63 |         80        0.80       16.91
         64 |        107        1.07       17.98
         65 |         39        0.39       18.37
         66 |          3        0.03       18.40
         67 |         76        0.76       19.16
         99 |      8,084       80.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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