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

      vin_7 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         36        0.36        0.36
          0 |        495        4.95        5.31
          1 |      1,273       12.73       18.04
          2 |        874        8.74       26.78
          3 |        716        7.16       33.94
          4 |      1,544       15.44       49.38
          5 |        765        7.65       57.03
          6 |        739        7.39       64.42
          7 |        538        5.38       69.80
          8 |        507        5.07       74.87
          9 |      1,135       11.35       86.22
          A |         88        0.88       87.10
          B |         41        0.41       87.51
          C |         97        0.97       88.48
          D |         39        0.39       88.87
          E |         57        0.57       89.44
          F |         69        0.69       90.13
          G |         47        0.47       90.60
          H |         58        0.58       91.18
          I |          1        0.01       91.19
          J |         51        0.51       91.70
          K |         41        0.41       92.11
          L |        113        1.13       93.24
          M |         39        0.39       93.63
          N |         20        0.20       93.83
          P |         38        0.38       94.21
          Q |         20        0.20       94.41
          R |         75        0.75       95.16
          S |         69        0.69       95.85
          T |         10        0.10       95.95
          U |         42        0.42       96.37
          V |         34        0.34       96.71
          W |         31        0.31       97.02
          X |         46        0.46       97.48
          Y |        128        1.28       98.76
          Z |        124        1.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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