Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         37        0.37        0.37
          1 |      1,029       10.29       10.66
          2 |        588        5.88       16.54
          3 |        626        6.26       22.80
          4 |        886        8.86       31.66
          5 |         37        0.37       32.03
          6 |        225        2.25       34.28
          7 |        296        2.96       37.24
          8 |        248        2.48       39.72
          9 |        432        4.32       44.04
          A |        798        7.98       52.02
          B |        204        2.04       54.06
          C |        545        5.45       59.51
          D |        431        4.31       63.82
          E |        194        1.94       65.76
          F |         48        0.48       66.24
          G |        374        3.74       69.98
          H |        111        1.11       71.09
          J |         36        0.36       71.45
          K |        246        2.46       73.91
          L |         66        0.66       74.57
          M |        572        5.72       80.29
          N |        421        4.21       84.50
          P |        117        1.17       85.67
          R |         20        0.20       85.87
          S |         76        0.76       86.63
          T |        770        7.70       94.33
          U |        240        2.40       96.73
          V |         87        0.87       97.60
          W |         98        0.98       98.58
          X |        104        1.04       99.62
          Y |         18        0.18       99.80
          Z |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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