Frequencies for first 10,000 rows of seq2 variable in vehicle dataset :

    EVENT 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        693        6.93        6.93
          2 |         83        0.83        7.76
          3 |          3        0.03        7.79
          4 |          1        0.01        7.80
          5 |          4        0.04        7.84
          7 |          7        0.07        7.91
          8 |         91        0.91        8.82
          9 |         17        0.17        8.99
         10 |          7        0.07        9.06
         12 |      1,084       10.84       19.90
         13 |         59        0.59       20.49
         14 |         88        0.88       21.37
         15 |          5        0.05       21.42
         17 |         18        0.18       21.60
         18 |         14        0.14       21.74
         19 |          8        0.08       21.82
         20 |          2        0.02       21.84
         21 |         15        0.15       21.99
         22 |          4        0.04       22.03
         23 |         29        0.29       22.32
         24 |        134        1.34       23.66
         25 |         66        0.66       24.32
         26 |          4        0.04       24.36
         27 |         78        0.78       25.14
         28 |          4        0.04       25.18
         29 |         31        0.31       25.49
         30 |         64        0.64       26.13
         31 |         25        0.25       26.38
         32 |         51        0.51       26.89
         33 |        320        3.20       30.09
         34 |        122        1.22       31.31
         35 |         70        0.70       32.01
         36 |         17        0.17       32.18
         37 |         30        0.30       32.48
         38 |         76        0.76       33.24
         39 |         31        0.31       33.55
         40 |          6        0.06       33.61
         41 |         15        0.15       33.76
         42 |        235        2.35       36.11
         43 |         71        0.71       36.82
         44 |          1        0.01       36.83
         46 |         15        0.15       36.98
         47 |          4        0.04       37.02
         48 |          1        0.01       37.03
         51 |         13        0.13       37.16
         52 |         27        0.27       37.43
         53 |         26        0.26       37.69
         54 |         11        0.11       37.80
         60 |          8        0.08       37.88
         61 |          2        0.02       37.90
         62 |          4        0.04       37.94
         63 |        815        8.15       46.09
         64 |        683        6.83       52.92
         65 |        481        4.81       57.73
         66 |          8        0.08       57.81
         67 |         87        0.87       58.68
         99 |      4,132       41.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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