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

    EVENT 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,072       40.72       40.72
          1 |        631        6.31       47.03
          2 |         62        0.62       47.65
          3 |          3        0.03       47.68
          4 |          2        0.02       47.70
          5 |          1        0.01       47.71
          6 |          1        0.01       47.72
          7 |          9        0.09       47.81
          8 |         88        0.88       48.69
          9 |         14        0.14       48.83
         10 |          7        0.07       48.90
         12 |      1,127       11.27       60.17
         13 |         27        0.27       60.44
         14 |         83        0.83       61.27
         15 |          3        0.03       61.30
         17 |         22        0.22       61.52
         18 |         15        0.15       61.67
         19 |          2        0.02       61.69
         20 |          4        0.04       61.73
         21 |          9        0.09       61.82
         22 |          2        0.02       61.84
         23 |         14        0.14       61.98
         24 |        118        1.18       63.16
         25 |         61        0.61       63.77
         26 |          6        0.06       63.83
         27 |         75        0.75       64.58
         28 |          5        0.05       64.63
         29 |         23        0.23       64.86
         30 |         62        0.62       65.48
         31 |         35        0.35       65.83
         32 |         30        0.30       66.13
         33 |        338        3.38       69.51
         34 |        130        1.30       70.81
         35 |         77        0.77       71.58
         36 |         14        0.14       71.72
         37 |         25        0.25       71.97
         38 |         64        0.64       72.61
         39 |         33        0.33       72.94
         40 |          4        0.04       72.98
         41 |         18        0.18       73.16
         42 |        190        1.90       75.06
         43 |         35        0.35       75.41
         46 |         12        0.12       75.53
         47 |          7        0.07       75.60
         51 |         16        0.16       75.76
         52 |         17        0.17       75.93
         53 |         15        0.15       76.08
         54 |         38        0.38       76.46
         60 |          9        0.09       76.55
         61 |          3        0.03       76.58
         62 |          5        0.05       76.63
         63 |        892        8.92       85.55
         64 |        827        8.27       93.82
         65 |        524        5.24       99.06
         66 |          6        0.06       99.12
         67 |         69        0.69       99.81
         99 |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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