Frequencies for first 10,000 rows of vin_2 variable in vehicle dataset :

      vin_2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         92        0.92        0.92
          1 |        566        5.66        6.58
          2 |        312        3.12        9.70
          3 |        190        1.90       11.60
          4 |         93        0.93       12.53
          5 |        101        1.01       13.54
          6 |        130        1.30       14.84
          7 |         93        0.93       15.77
          8 |         54        0.54       16.31
          9 |        574        5.74       22.05
          A |        361        3.61       25.66
          B |        380        3.80       29.46
          C |        337        3.37       32.83
          D |        153        1.53       34.36
          E |        168        1.68       36.04
          F |        789        7.89       43.93
          G |      1,276       12.76       56.69
          H |        745        7.45       64.14
          I |          3        0.03       64.17
          J |        243        2.43       66.60
          K |        338        3.38       69.98
          L |        415        4.15       74.13
          M |        333        3.33       77.46
          N |        445        4.45       81.91
          P |        153        1.53       83.44
          Q |         45        0.45       83.89
          R |        163        1.63       85.52
          S |        242        2.42       87.94
          T |        461        4.61       92.55
          U |         36        0.36       92.91
          V |        113        1.13       94.04
          W |        115        1.15       95.19
          X |        195        1.95       97.14
          Y |        170        1.70       98.84
          Z |        116        1.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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