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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         26        0.26        0.26
          1 |      5,322       53.22       53.48
          2 |        935        9.35       62.83
          3 |        391        3.91       66.74
          4 |        474        4.74       71.48
          5 |        143        1.43       72.91
          6 |         10        0.10       73.01
          7 |          3        0.03       73.04
          8 |          2        0.02       73.06
          9 |        422        4.22       77.28
          A |          4        0.04       77.32
          B |          1        0.01       77.33
          C |         54        0.54       77.87
          D |          7        0.07       77.94
          E |          6        0.06       78.00
          F |         27        0.27       78.27
          G |          2        0.02       78.29
          H |          3        0.03       78.32
          J |      1,670       16.70       95.02
          K |        174        1.74       96.76
          L |          5        0.05       96.81
          M |          1        0.01       96.82
          N |          2        0.02       96.84
          P |          2        0.02       96.86
          R |         13        0.13       96.99
          S |         32        0.32       97.31
          T |         19        0.19       97.50
          V |          5        0.05       97.55
          W |        177        1.77       99.32
          X |          2        0.02       99.34
          Y |         47        0.47       99.81
          Z |         19        0.19      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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