Frequencies for first 10,000 rows of vin_10 variable in vehicle dataset :

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        145        1.45        1.45
          0 |        126        1.26        2.71
          1 |         96        0.96        3.67
          2 |         96        0.96        4.63
          3 |         86        0.86        5.49
          4 |         81        0.81        6.30
          5 |        111        1.11        7.41
          6 |         85        0.85        8.26
          7 |        109        1.09        9.35
          8 |         92        0.92       10.27
          9 |        450        4.50       14.77
          A |          3        0.03       14.80
          B |        167        1.67       16.47
          C |        189        1.89       18.36
          D |        234        2.34       20.70
          E |        371        3.71       24.41
          F |        418        4.18       28.59
          G |        543        5.43       34.02
          H |        551        5.51       39.53
          J |        569        5.69       45.22
          K |        655        6.55       51.77
          L |        550        5.50       57.27
          M |        527        5.27       62.54
          N |        520        5.20       67.74
          P |        610        6.10       73.84
          R |        630        6.30       80.14
          S |        726        7.26       87.40
          T |        649        6.49       93.89
          V |        560        5.60       99.49
          W |         51        0.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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