Frequencies for first 10,000 rows of vin_12 variable in vehicle dataset :

        VIN |
Character(1 |
         2) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         62        0.62        0.62
          0 |      1,725       17.25       17.87
          1 |      2,172       21.72       39.59
          2 |      1,211       12.11       51.70
          3 |        688        6.88       58.58
          4 |        431        4.31       62.89
          5 |        713        7.13       70.02
          6 |        576        5.76       75.78
          7 |        359        3.59       79.37
          8 |        220        2.20       81.57
          9 |        452        4.52       86.09
          A |        523        5.23       91.32
          B |        321        3.21       94.53
          C |        137        1.37       95.90
          D |         86        0.86       96.76
          E |         27        0.27       97.03
          F |         17        0.17       97.20
          G |         12        0.12       97.32
          H |         12        0.12       97.44
          J |         62        0.62       98.06
          K |         17        0.17       98.23
          L |         13        0.13       98.36
          M |         49        0.49       98.85
          N |         14        0.14       98.99
          P |          7        0.07       99.06
          R |          3        0.03       99.09
          S |          7        0.07       99.16
          T |          6        0.06       99.22
          U |         14        0.14       99.36
          V |         14        0.14       99.50
          W |         18        0.18       99.68
          X |         16        0.16       99.84
          Y |          6        0.06       99.90
          Z |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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