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

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         33        0.33        0.33
          0 |         19        0.19        0.52
          1 |        571        5.71        6.23
          2 |        593        5.93       12.16
          3 |        682        6.82       18.98
          4 |        689        6.89       25.87
          5 |        706        7.06       32.93
          6 |        724        7.24       40.17
          7 |        781        7.81       47.98
          8 |        390        3.90       51.88
          9 |        350        3.50       55.38
          B |         10        0.10       55.48
          C |         21        0.21       55.69
          D |         21        0.21       55.90
          E |         39        0.39       56.29
          F |         48        0.48       56.77
          G |         59        0.59       57.36
          H |         87        0.87       58.23
          J |         89        0.89       59.12
          K |        123        1.23       60.35
          L |        171        1.71       62.06
          M |        196        1.96       64.02
          N |        186        1.86       65.88
          P |        281        2.81       68.69
          R |        308        3.08       71.77
          S |        330        3.30       75.07
          T |        355        3.55       78.62
          U |          1        0.01       78.63
          V |        443        4.43       83.06
          W |        493        4.93       87.99
          X |        564        5.64       93.63
          Y |        637        6.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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