Frequencies for first 10,000 rows of vin_8 variable in vehicle dataset :

      vin_8 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        296        2.96        2.96
           |          1        0.01        2.97
          0 |      1,128       11.28       14.25
          1 |      2,012       20.12       34.37
          2 |        883        8.83       43.20
          3 |        560        5.60       48.80
          4 |        639        6.39       55.19
          5 |        607        6.07       61.26
          6 |        336        3.36       64.62
          7 |        366        3.66       68.28
          8 |        310        3.10       71.38
          9 |      1,010       10.10       81.48
          A |        251        2.51       83.99
          B |        198        1.98       85.97
          C |         91        0.91       86.88
          D |        115        1.15       88.03
          E |         99        0.99       89.02
          F |         83        0.83       89.85
          G |         71        0.71       90.56
          H |        160        1.60       92.16
          I |          1        0.01       92.17
          J |         24        0.24       92.41
          K |         10        0.10       92.51
          L |         96        0.96       93.47
          M |         44        0.44       93.91
          N |         25        0.25       94.16
          O |          1        0.01       94.17
          P |         27        0.27       94.44
          Q |          1        0.01       94.45
          R |         87        0.87       95.32
          S |        235        2.35       97.67
          T |         28        0.28       97.95
          U |          9        0.09       98.04
          V |          3        0.03       98.07
          W |         25        0.25       98.32
          X |         93        0.93       99.25
          Y |         58        0.58       99.83
          Z |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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