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

    EVENT 4 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,546       75.46       75.46
          1 |        633        6.33       81.79
          2 |         79        0.79       82.58
          3 |         26        0.26       82.84
          5 |         18        0.18       83.02
          7 |          4        0.04       83.06
          8 |         28        0.28       83.34
          9 |          1        0.01       83.35
         11 |          1        0.01       83.36
         12 |        112        1.12       84.48
         13 |         20        0.20       84.68
         14 |         35        0.35       85.03
         17 |         11        0.11       85.14
         18 |         11        0.11       85.25
         19 |         16        0.16       85.41
         21 |          6        0.06       85.47
         23 |          9        0.09       85.56
         24 |         59        0.59       86.15
         25 |         32        0.32       86.47
         26 |          2        0.02       86.49
         27 |         45        0.45       86.94
         28 |          6        0.06       87.00
         29 |         19        0.19       87.19
         30 |         57        0.57       87.76
         31 |         30        0.30       88.06
         32 |         17        0.17       88.23
         33 |         53        0.53       88.76
         34 |         58        0.58       89.34
         35 |         53        0.53       89.87
         36 |         11        0.11       89.98
         37 |          9        0.09       90.07
         38 |        118        1.18       91.25
         39 |         40        0.40       91.65
         40 |          7        0.07       91.72
         41 |         24        0.24       91.96
         42 |        285        2.85       94.81
         43 |         52        0.52       95.33
         46 |         15        0.15       95.48
         47 |          2        0.02       95.50
         48 |          1        0.01       95.51
         50 |          3        0.03       95.54
         51 |          7        0.07       95.61
         52 |          5        0.05       95.66
         53 |         12        0.12       95.78
         54 |         19        0.19       95.97
         60 |          5        0.05       96.02
         62 |         10        0.10       96.12
         63 |         87        0.87       96.99
         64 |        132        1.32       98.31
         65 |         49        0.49       98.80
         67 |        100        1.00       99.80
         99 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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