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

        VIN |
Characters( |
        10) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         31        0.31        0.31
          0 |         22        0.22        0.53
          1 |        565        5.65        6.18
          2 |        593        5.93       12.11
          3 |        663        6.63       18.74
          4 |        676        6.76       25.50
          5 |        677        6.77       32.27
          6 |        690        6.90       39.17
          7 |        704        7.04       46.21
          8 |        501        5.01       51.22
          9 |        725        7.25       58.47
          A |        244        2.44       60.91
          B |         41        0.41       61.32
          C |         18        0.18       61.50
          D |         14        0.14       61.64
          E |         23        0.23       61.87
          F |         35        0.35       62.22
          G |         38        0.38       62.60
          H |         45        0.45       63.05
          J |         58        0.58       63.63
          K |         78        0.78       64.41
          L |        118        1.18       65.59
          M |        119        1.19       66.78
          N |        167        1.67       68.45
          O |          1        0.01       68.46
          P |        188        1.88       70.34
          R |        271        2.71       73.05
          S |        303        3.03       76.08
          T |        339        3.39       79.47
          V |        412        4.12       83.59
          W |        446        4.46       88.05
          X |        517        5.17       93.22
          Y |        678        6.78      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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