Frequencies for first 10,000 rows of vin_2 variable in vehicle dataset :

        VIN |
Character(2 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         24        0.24        0.24
          1 |         20        0.20        0.44
          2 |         12        0.12        0.56
          3 |          5        0.05        0.61
          4 |          9        0.09        0.70
          5 |         17        0.17        0.87
          6 |          5        0.05        0.92
          7 |          5        0.05        0.97
          8 |         10        0.10        1.07
          9 |        395        3.95        5.02
          A |        230        2.30        7.32
          B |        438        4.38       11.70
          C |        168        1.68       13.38
          D |        285        2.85       16.23
          E |          5        0.05       16.28
          F |      1,612       16.12       32.40
          G |      1,946       19.46       51.86
          H |      1,316       13.16       65.02
          I |          1        0.01       65.03
          J |        233        2.33       67.36
          K |        125        1.25       68.61
          L |         91        0.91       69.52
          M |        370        3.70       73.22
          N |        805        8.05       81.27
          P |         34        0.34       81.61
          Q |          1        0.01       81.62
          R |          5        0.05       81.67
          S |        261        2.61       84.28
          T |        965        9.65       93.93
          U |         15        0.15       94.08
          V |        185        1.85       95.93
          W |         14        0.14       96.07
          X |        153        1.53       97.60
          Y |        206        2.06       99.66
          Z |         34        0.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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