Frequencies for first 10,000 rows of vin_11 variable in vehicle dataset :

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        401        4.01        4.01
          0 |        750        7.50       11.51
          1 |        361        3.61       15.12
          2 |        317        3.17       18.29
          3 |        249        2.49       20.78
          4 |        303        3.03       23.81
          5 |        343        3.43       27.24
          6 |        326        3.26       30.50
          7 |        330        3.30       33.80
          8 |        378        3.78       37.58
          9 |        640        6.40       43.98
          A |        319        3.19       47.17
          B |        190        1.90       49.07
          C |        500        5.00       54.07
          D |        193        1.93       56.00
          E |        166        1.66       57.66
          F |        235        2.35       60.01
          G |        129        1.29       61.30
          H |        375        3.75       65.05
          J |        183        1.83       66.88
          K |        257        2.57       69.45
          L |        222        2.22       71.67
          M |        232        2.32       73.99
          N |        147        1.47       75.46
          O |          1        0.01       75.47
          P |        254        2.54       78.01
          R |        202        2.02       80.03
          S |        286        2.86       82.89
          T |        173        1.73       84.62
          U |        476        4.76       89.38
          V |         88        0.88       90.26
          W |        283        2.83       93.09
          X |        192        1.92       95.01
          Y |        162        1.62       96.63
          Z |        337        3.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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