Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         28        0.28        0.28
          0 |        178        1.78        2.06
          1 |        509        5.09        7.15
          2 |        243        2.43        9.58
          3 |        391        3.91       13.49
          4 |        524        5.24       18.73
          5 |        363        3.63       22.36
          6 |        235        2.35       24.71
          7 |        157        1.57       26.28
          8 |         96        0.96       27.24
          9 |        471        4.71       31.95
          A |        331        3.31       35.26
          B |        300        3.00       38.26
          C |        271        2.71       40.97
          D |        267        2.67       43.64
          E |        400        4.00       47.64
          F |        226        2.26       49.90
          G |        179        1.79       51.69
          H |        227        2.27       53.96
          J |        201        2.01       55.97
          K |        409        4.09       60.06
          L |        260        2.60       62.66
          M |        228        2.28       64.94
          N |        239        2.39       67.33
          P |        223        2.23       69.56
          R |        449        4.49       74.05
          S |        376        3.76       77.81
          T |        336        3.36       81.17
          U |        239        2.39       83.56
          V |        144        1.44       85.00
          W |        448        4.48       89.48
          X |        519        5.19       94.67
          Y |        318        3.18       97.85
          Z |        215        2.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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