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

    EVENT 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,229       42.29       42.29
          1 |        640        6.40       48.69
          2 |         84        0.84       49.53
          3 |          6        0.06       49.59
          4 |          1        0.01       49.60
          5 |          7        0.07       49.67
          7 |         10        0.10       49.77
          8 |         81        0.81       50.58
          9 |         11        0.11       50.69
         10 |          4        0.04       50.73
         11 |          3        0.03       50.76
         12 |      1,037       10.37       61.13
         13 |         23        0.23       61.36
         14 |         83        0.83       62.19
         17 |         16        0.16       62.35
         18 |          8        0.08       62.43
         19 |          3        0.03       62.46
         20 |          6        0.06       62.52
         21 |         11        0.11       62.63
         22 |          1        0.01       62.64
         23 |         17        0.17       62.81
         24 |        123        1.23       64.04
         25 |         62        0.62       64.66
         26 |         14        0.14       64.80
         27 |         73        0.73       65.53
         28 |          2        0.02       65.55
         29 |         25        0.25       65.80
         30 |         55        0.55       66.35
         31 |         24        0.24       66.59
         32 |         32        0.32       66.91
         33 |        328        3.28       70.19
         34 |        122        1.22       71.41
         35 |         76        0.76       72.17
         36 |         20        0.20       72.37
         37 |         22        0.22       72.59
         38 |         59        0.59       73.18
         39 |         24        0.24       73.42
         40 |          4        0.04       73.46
         41 |         19        0.19       73.65
         42 |        198        1.98       75.63
         43 |         47        0.47       76.10
         44 |          3        0.03       76.13
         45 |          5        0.05       76.18
         46 |          8        0.08       76.26
         47 |          4        0.04       76.30
         48 |          1        0.01       76.31
         50 |          1        0.01       76.32
         51 |         13        0.13       76.45
         52 |         22        0.22       76.67
         53 |         12        0.12       76.79
         54 |         45        0.45       77.24
         60 |         11        0.11       77.35
         61 |          1        0.01       77.36
         62 |          7        0.07       77.43
         63 |        846        8.46       85.89
         64 |        798        7.98       93.87
         65 |        481        4.81       98.68
         66 |          4        0.04       98.72
         67 |         69        0.69       99.41
         99 |         59        0.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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