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

        vin |
character(1 |
         1) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |         44        0.44        0.44
          0 |        406        4.06        4.50
          1 |        410        4.10        8.60
          2 |        311        3.11       11.71
          3 |         68        0.68       12.39
          4 |        109        1.09       13.48
          5 |        237        2.37       15.85
          6 |        114        1.14       16.99
          7 |        186        1.86       18.85
          8 |        106        1.06       19.91
          9 |        455        4.55       24.46
          A |        714        7.14       31.60
          B |        280        2.80       34.40
          C |        600        6.00       40.40
          D |        287        2.87       43.27
          E |        308        3.08       46.35
          F |        357        3.57       49.92
          G |        278        2.78       52.70
          H |        414        4.14       56.84
          J |        253        2.53       59.37
          K |        352        3.52       62.89
          L |        429        4.29       67.18
          M |        346        3.46       70.64
          N |        288        2.88       73.52
          P |        190        1.90       75.42
          R |        278        2.78       78.20
          S |        388        3.88       82.08
          T |        145        1.45       83.53
          U |        542        5.42       88.95
          V |         25        0.25       89.20
          W |        181        1.81       91.01
          X |        124        1.24       92.25
          Y |        264        2.64       94.89
          Z |        511        5.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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