Frequencies for first 10,000 rows of vin_11 variable in vehicle dataset :

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        347        3.47        3.47
          0 |        726        7.26       10.73
          1 |        381        3.81       14.54
          2 |        331        3.31       17.85
          3 |        224        2.24       20.09
          4 |        262        2.62       22.71
          5 |        295        2.95       25.66
          6 |        296        2.96       28.62
          7 |        285        2.85       31.47
          8 |        340        3.40       34.87
          9 |        579        5.79       40.66
          A |        307        3.07       43.73
          B |        185        1.85       45.58
          C |        536        5.36       50.94
          D |        177        1.77       52.71
          E |        174        1.74       54.45
          F |        281        2.81       57.26
          G |        141        1.41       58.67
          H |        453        4.53       63.20
          J |        178        1.78       64.98
          K |        316        3.16       68.14
          L |        238        2.38       70.52
          M |        212        2.12       72.64
          N |        155        1.55       74.19
          P |        316        3.16       77.35
          R |        215        2.15       79.50
          S |        316        3.16       82.66
          T |        175        1.75       84.41
          U |        478        4.78       89.19
          V |         88        0.88       90.07
          W |        284        2.84       92.91
          X |        189        1.89       94.80
          Y |        191        1.91       96.71
          Z |        329        3.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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