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

    Vehicle |
       Make |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         20        0.20        0.20
          2 |        112        1.12        1.32
          6 |        114        1.14        2.46
          7 |        493        4.93        7.39
          9 |        210        2.10        9.49
         12 |      1,577       15.77       25.26
         13 |         61        0.61       25.87
         14 |        245        2.45       28.32
         18 |        282        2.82       31.14
         19 |        122        1.22       32.36
         20 |      1,906       19.06       51.42
         21 |        382        3.82       55.24
         22 |        299        2.99       58.23
         23 |        287        2.87       61.10
         30 |        167        1.67       62.77
         31 |          2        0.02       62.79
         32 |         22        0.22       63.01
         34 |         38        0.38       63.39
         35 |        502        5.02       68.41
         36 |          5        0.05       68.46
         37 |        354        3.54       72.00
         38 |         39        0.39       72.39
         39 |          8        0.08       72.47
         41 |        128        1.28       73.75
         42 |         36        0.36       74.11
         43 |          5        0.05       74.16
         44 |          2        0.02       74.18
         45 |         20        0.20       74.38
         46 |          6        0.06       74.44
         47 |          4        0.04       74.48
         48 |         41        0.41       74.89
         49 |        566        5.66       80.55
         50 |          6        0.06       80.61
         51 |         22        0.22       80.83
         52 |         35        0.35       81.18
         53 |         70        0.70       81.88
         59 |         71        0.71       82.59
         62 |         42        0.42       83.01
         63 |         84        0.84       83.85
         67 |         79        0.79       84.64
         69 |          6        0.06       84.70
         81 |          1        0.01       84.71
         82 |         86        0.86       85.57
         84 |        139        1.39       86.96
         85 |         54        0.54       87.50
         86 |         47        0.47       87.97
         87 |         70        0.70       88.67
         88 |         30        0.30       88.97
         95 |        102        1.02       89.99
         98 |         13        0.13       90.12
         99 |        167        1.67       91.79
          . |        821        8.21      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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