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

     vin_11 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         91        0.91        0.91
          0 |        533        5.33        6.24
          1 |        339        3.39        9.63
          2 |        289        2.89       12.52
          3 |        101        1.01       13.53
          4 |        163        1.63       15.16
          5 |        211        2.11       17.27
          6 |        200        2.00       19.27
          7 |        247        2.47       21.74
          8 |        204        2.04       23.78
          9 |        511        5.11       28.89
          A |        451        4.51       33.40
          B |        249        2.49       35.89
          C |        690        6.90       42.79
          D |        217        2.17       44.96
          E |        313        3.13       48.09
          F |        332        3.32       51.41
          G |        203        2.03       53.44
          H |        480        4.80       58.24
          J |        255        2.55       60.79
          K |        315        3.15       63.94
          L |        349        3.49       67.43
          M |        264        2.64       70.07
          N |        194        1.94       72.01
          O |          1        0.01       72.02
          P |        319        3.19       75.21
          R |        215        2.15       77.36
          S |        330        3.30       80.66
          T |        205        2.05       82.71
          U |        483        4.83       87.54
          V |         59        0.59       88.13
          W |        217        2.17       90.30
          X |        169        1.69       91.99
          Y |        245        2.45       94.44
          Z |        556        5.56      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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