Frequencies for first 10,000 rows of vin_7 variable in vehicle dataset :

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         44        0.44        0.44
          0 |        604        6.04        6.48
          1 |      1,255       12.55       19.03
          2 |        748        7.48       26.51
          3 |        674        6.74       33.25
          4 |      1,420       14.20       47.45
          5 |        734        7.34       54.79
          6 |        765        7.65       62.44
          7 |        625        6.25       68.69
          8 |        475        4.75       73.44
          9 |      1,033       10.33       83.77
          A |        122        1.22       84.99
          B |         51        0.51       85.50
          C |        121        1.21       86.71
          D |         50        0.50       87.21
          E |         36        0.36       87.57
          F |         60        0.60       88.17
          G |         64        0.64       88.81
          H |         50        0.50       89.31
          J |         63        0.63       89.94
          K |         39        0.39       90.33
          L |        144        1.44       91.77
          M |         49        0.49       92.26
          N |         33        0.33       92.59
          P |         40        0.40       92.99
          Q |         35        0.35       93.34
          R |         96        0.96       94.30
          S |         88        0.88       95.18
          T |         19        0.19       95.37
          U |         51        0.51       95.88
          V |         30        0.30       96.18
          W |         33        0.33       96.51
          X |         56        0.56       97.07
          Y |        129        1.29       98.36
          Z |        164        1.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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