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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         23        0.23        0.23
          1 |      5,410       54.10       54.33
          2 |        907        9.07       63.40
          3 |        286        2.86       66.26
          4 |        409        4.09       70.35
          5 |         35        0.35       70.70
          6 |         17        0.17       70.87
          7 |          8        0.08       70.95
          8 |         11        0.11       71.06
          9 |        387        3.87       74.93
          A |          5        0.05       74.98
          B |         16        0.16       75.14
          C |        112        1.12       76.26
          D |         10        0.10       76.36
          E |         17        0.17       76.53
          F |         56        0.56       77.09
          G |         10        0.10       77.19
          H |         13        0.13       77.32
          I |          1        0.01       77.33
          J |      1,805       18.05       95.38
          K |        130        1.30       96.68
          L |          3        0.03       96.71
          M |          5        0.05       96.76
          N |          3        0.03       96.79
          P |          3        0.03       96.82
          R |         23        0.23       97.05
          S |         32        0.32       97.37
          T |         26        0.26       97.63
          U |          5        0.05       97.68
          V |         11        0.11       97.79
          W |        159        1.59       99.38
          X |          5        0.05       99.43
          Y |         41        0.41       99.84
          Z |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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