Frequencies for first 10,000 rows of vin_1 variable in vehicle dataset :

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
           |          1        0.01        0.01
          0 |        199        1.99        2.00
          1 |      1,881       18.81       20.81
          2 |        638        6.38       27.19
          3 |        548        5.48       32.67
          4 |        472        4.72       37.39
          5 |        197        1.97       39.36
          6 |        290        2.90       42.26
          7 |        155        1.55       43.81
          8 |        198        1.98       45.79
          9 |        993        9.93       55.72
          A |        207        2.07       57.79
          B |        113        1.13       58.92
          C |        922        9.22       68.14
          D |        132        1.32       69.46
          E |        151        1.51       70.97
          F |        512        5.12       76.09
          G |        177        1.77       77.86
          H |        240        2.40       80.26
          I |          2        0.02       80.28
          J |        290        2.90       83.18
          K |        169        1.69       84.87
          L |         88        0.88       85.75
          M |         48        0.48       86.23
          N |         37        0.37       86.60
          P |        130        1.30       87.90
          R |        351        3.51       91.41
          S |        284        2.84       94.25
          T |        242        2.42       96.67
          U |         43        0.43       97.10
          V |         95        0.95       98.05
          W |        110        1.10       99.15
          X |         34        0.34       99.49
          Y |         11        0.11       99.60
          Z |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016