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

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         42        0.42        0.42
          0 |        455        4.55        4.97
          1 |        380        3.80        8.77
          2 |        366        3.66       12.43
          3 |         93        0.93       13.36
          4 |        134        1.34       14.70
          5 |        179        1.79       16.49
          6 |        161        1.61       18.10
          7 |        166        1.66       19.76
          8 |        138        1.38       21.14
          9 |        434        4.34       25.48
          A |        645        6.45       31.93
          B |        210        2.10       34.03
          C |        620        6.20       40.23
          D |        247        2.47       42.70
          E |        355        3.55       46.25
          F |        354        3.54       49.79
          G |        229        2.29       52.08
          H |        421        4.21       56.29
          J |        278        2.78       59.07
          K |        328        3.28       62.35
          L |        440        4.40       66.75
          M |        351        3.51       70.26
          N |        295        2.95       73.21
          P |        270        2.70       75.91
          R |        260        2.60       78.51
          S |        344        3.44       81.95
          T |        159        1.59       83.54
          U |        487        4.87       88.41
          V |         16        0.16       88.57
          W |        178        1.78       90.35
          X |        137        1.37       91.72
          Y |        260        2.60       94.32
          Z |        568        5.68      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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