Frequencies for first 10,000 rows of vin_1 variable in vehicle dataset :

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          1        0.01        0.01
          0 |        134        1.34        1.35
          1 |      1,703       17.03       18.38
          2 |        703        7.03       25.41
          3 |        542        5.42       30.83
          4 |        522        5.22       36.05
          5 |        201        2.01       38.06
          6 |        349        3.49       41.55
          7 |        205        2.05       43.60
          8 |        215        2.15       45.75
          9 |      1,121       11.21       56.96
          A |        164        1.64       58.60
          B |        144        1.44       60.04
          C |      1,050       10.50       70.54
          D |        137        1.37       71.91
          E |        128        1.28       73.19
          F |        528        5.28       78.47
          G |        188        1.88       80.35
          H |        229        2.29       82.64
          I |          6        0.06       82.70
          J |         97        0.97       83.67
          K |        166        1.66       85.33
          L |        116        1.16       86.49
          M |         37        0.37       86.86
          N |         39        0.39       87.25
          O |          9        0.09       87.34
          P |        165        1.65       88.99
          Q |          1        0.01       89.00
          R |        307        3.07       92.07
          S |        211        2.11       94.18
          T |        261        2.61       96.79
          U |         29        0.29       97.08
          V |        106        1.06       98.14
          W |         90        0.90       99.04
          X |         48        0.48       99.52
          Y |          4        0.04       99.56
          Z |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016