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

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         32        0.32        0.32
          0 |        254        2.54        2.86
          1 |        517        5.17        8.03
          2 |        257        2.57       10.60
          3 |        410        4.10       14.70
          4 |        543        5.43       20.13
          5 |        291        2.91       23.04
          6 |        241        2.41       25.45
          7 |        175        1.75       27.20
          8 |        134        1.34       28.54
          9 |        430        4.30       32.84
          A |        364        3.64       36.48
          B |        365        3.65       40.13
          C |        249        2.49       42.62
          D |        263        2.63       45.25
          E |        402        4.02       49.27
          F |        254        2.54       51.81
          G |        167        1.67       53.48
          H |        280        2.80       56.28
          J |        181        1.81       58.09
          K |        396        3.96       62.05
          L |        240        2.40       64.45
          M |        188        1.88       66.33
          N |        284        2.84       69.17
          P |        233        2.33       71.50
          R |        430        4.30       75.80
          S |        363        3.63       79.43
          T |        261        2.61       82.04
          U |        232        2.32       84.36
          V |         87        0.87       85.23
          W |        435        4.35       89.58
          X |        526        5.26       94.84
          Y |        317        3.17       98.01
          Z |        199        1.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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