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

    Vehicle |
       Make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        131        1.31        1.31
          2 |         84        0.84        2.15
          6 |         95        0.95        3.10
          7 |        485        4.85        7.95
          8 |          2        0.02        7.97
          9 |        309        3.09       11.06
         12 |      1,850       18.50       29.56
         13 |         57        0.57       30.13
         14 |        267        2.67       32.80
         18 |        284        2.84       35.64
         19 |        148        1.48       37.12
         20 |      2,009       20.09       57.21
         21 |        261        2.61       59.82
         22 |        389        3.89       63.71
         23 |        234        2.34       66.05
         30 |        394        3.94       69.99
         32 |         18        0.18       70.17
         34 |         23        0.23       70.40
         35 |        372        3.72       74.12
         36 |         51        0.51       74.63
         37 |        513        5.13       79.76
         41 |         52        0.52       80.28
         42 |         34        0.34       80.62
         43 |         41        0.41       81.03
         45 |         37        0.37       81.40
         48 |         21        0.21       81.61
         49 |        332        3.32       84.93
         50 |         47        0.47       85.40
         51 |         29        0.29       85.69
         60 |          6        0.06       85.75
         62 |        133        1.33       87.08
         63 |        160        1.60       88.68
         65 |          9        0.09       88.77
         66 |         87        0.87       89.64
         67 |        180        1.80       91.44
         69 |         21        0.21       91.65
         70 |         22        0.22       91.87
         80 |          1        0.01       91.88
         81 |          3        0.03       91.91
         82 |         41        0.41       92.32
         83 |          2        0.02       92.34
         84 |        194        1.94       94.28
         85 |        108        1.08       95.36
         86 |         41        0.41       95.77
         87 |        109        1.09       96.86
         88 |        124        1.24       98.10
         95 |         39        0.39       98.49
         98 |         97        0.97       99.46
         99 |         54        0.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016