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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         44        0.44        0.44
          1 |      4,483       44.83       45.27
          2 |        618        6.18       51.45
          3 |        225        2.25       53.70
          4 |        191        1.91       55.61
          5 |         44        0.44       56.05
          6 |        107        1.07       57.12
          7 |         46        0.46       57.58
          8 |         55        0.55       58.13
          9 |        436        4.36       62.49
          A |         32        0.32       62.81
          B |         37        0.37       63.18
          C |        322        3.22       66.40
          D |         35        0.35       66.75
          E |         54        0.54       67.29
          F |        186        1.86       69.15
          G |         40        0.40       69.55
          H |         99        0.99       70.54
          I |          1        0.01       70.55
          J |      2,123       21.23       91.78
          K |        168        1.68       93.46
          L |         20        0.20       93.66
          M |         12        0.12       93.78
          N |         10        0.10       93.88
          O |          3        0.03       93.91
          P |         38        0.38       94.29
          Q |          1        0.01       94.30
          R |         95        0.95       95.25
          S |         84        0.84       96.09
          T |        103        1.03       97.12
          U |         11        0.11       97.23
          V |         32        0.32       97.55
          W |        180        1.80       99.35
          X |          9        0.09       99.44
          Y |         44        0.44       99.88
          Z |         12        0.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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