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

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         81        0.81        0.81
          0 |        526        5.26        6.07
          1 |        370        3.70        9.77
          2 |        318        3.18       12.95
          3 |         91        0.91       13.86
          4 |        149        1.49       15.35
          5 |        196        1.96       17.31
          6 |        173        1.73       19.04
          7 |        196        1.96       21.00
          8 |        181        1.81       22.81
          9 |        515        5.15       27.96
          A |        531        5.31       33.27
          B |        220        2.20       35.47
          C |        669        6.69       42.16
          D |        248        2.48       44.64
          E |        316        3.16       47.80
          F |        303        3.03       50.83
          G |        241        2.41       53.24
          H |        444        4.44       57.68
          J |        227        2.27       59.95
          K |        297        2.97       62.92
          L |        357        3.57       66.49
          M |        308        3.08       69.57
          N |        234        2.34       71.91
          P |        291        2.91       74.82
          R |        274        2.74       77.56
          S |        317        3.17       80.73
          T |        191        1.91       82.64
          U |        507        5.07       87.71
          V |         36        0.36       88.07
          W |        220        2.20       90.27
          X |        135        1.35       91.62
          Y |        271        2.71       94.33
          Z |        567        5.67      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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