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

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         75        0.75        0.75
          0 |        449        4.49        5.24
          1 |        403        4.03        9.27
          2 |        327        3.27       12.54
          3 |         69        0.69       13.23
          4 |        144        1.44       14.67
          5 |        163        1.63       16.30
          6 |        160        1.60       17.90
          7 |        177        1.77       19.67
          8 |        145        1.45       21.12
          9 |        576        5.76       26.88
          A |        560        5.60       32.48
          B |        221        2.21       34.69
          C |        617        6.17       40.86
          D |        232        2.32       43.18
          E |        349        3.49       46.67
          F |        340        3.40       50.07
          G |        223        2.23       52.30
          H |        458        4.58       56.88
          J |        248        2.48       59.36
          K |        342        3.42       62.78
          L |        389        3.89       66.67
          M |        314        3.14       69.81
          N |        238        2.38       72.19
          P |        266        2.66       74.85
          R |        251        2.51       77.36
          S |        327        3.27       80.63
          T |        180        1.80       82.43
          U |        497        4.97       87.40
          V |         21        0.21       87.61
          W |        196        1.96       89.57
          X |        127        1.27       90.84
          Y |        284        2.84       93.68
          Z |        632        6.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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