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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
           |          1        0.01        0.01
           |          1        0.01        0.02
          0 |        129        1.29        1.31
          1 |      2,529       25.29       26.60
          2 |        591        5.91       32.51
          3 |        440        4.40       36.91
          4 |        353        3.53       40.44
          5 |        155        1.55       41.99
          6 |        236        2.36       44.35
          7 |        137        1.37       45.72
          8 |        131        1.31       47.03
          9 |        866        8.66       55.69
          A |        115        1.15       56.84
          B |         71        0.71       57.55
          C |        775        7.75       65.30
          D |         89        0.89       66.19
          E |        129        1.29       67.48
          F |        384        3.84       71.32
          G |        154        1.54       72.86
          H |        228        2.28       75.14
          I |          8        0.08       75.22
          J |      1,106       11.06       86.28
          K |        122        1.22       87.50
          L |         65        0.65       88.15
          M |         31        0.31       88.46
          N |         40        0.40       88.86
          O |          5        0.05       88.91
          P |        104        1.04       89.95
          R |        291        2.91       92.86
          S |        200        2.00       94.86
          T |        184        1.84       96.70
          U |         28        0.28       96.98
          V |         84        0.84       97.82
          W |        147        1.47       99.29
          X |         31        0.31       99.60
          Y |         16        0.16       99.76
          Z |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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