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

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         43        0.43        0.43
          0 |        429        4.29        4.72
          1 |        369        3.69        8.41
          2 |        410        4.10       12.51
          3 |         64        0.64       13.15
          4 |        128        1.28       14.43
          5 |        208        2.08       16.51
          6 |        163        1.63       18.14
          7 |        171        1.71       19.85
          8 |        119        1.19       21.04
          9 |        424        4.24       25.28
          A |        689        6.89       32.17
          B |        212        2.12       34.29
          C |        649        6.49       40.78
          D |        247        2.47       43.25
          E |        335        3.35       46.60
          F |        338        3.38       49.98
          G |        242        2.42       52.40
          H |        421        4.21       56.61
          J |        299        2.99       59.60
          K |        340        3.40       63.00
          L |        411        4.11       67.11
          M |        338        3.38       70.49
          N |        274        2.74       73.23
          P |        216        2.16       75.39
          R |        242        2.42       77.81
          S |        294        2.94       80.75
          T |        173        1.73       82.48
          U |        514        5.14       87.62
          V |         24        0.24       87.86
          W |        187        1.87       89.73
          X |        129        1.29       91.02
          Y |        339        3.39       94.41
          Z |        559        5.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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