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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          4        0.04        0.04
          1 |      5,302       53.02       53.06
          2 |        957        9.57       62.63
          3 |        398        3.98       66.61
          4 |        468        4.68       71.29
          5 |        182        1.82       73.11
          6 |         14        0.14       73.25
          7 |          3        0.03       73.28
          8 |          2        0.02       73.30
          9 |        473        4.73       78.03
          A |          6        0.06       78.09
          B |          1        0.01       78.10
          C |         55        0.55       78.65
          D |          3        0.03       78.68
          E |          1        0.01       78.69
          F |         23        0.23       78.92
          G |          4        0.04       78.96
          H |          8        0.08       79.04
          J |      1,614       16.14       95.18
          K |        190        1.90       97.08
          L |          1        0.01       97.09
          M |          2        0.02       97.11
          N |          1        0.01       97.12
          P |          1        0.01       97.13
          R |          6        0.06       97.19
          S |         33        0.33       97.52
          T |         10        0.10       97.62
          U |          6        0.06       97.68
          V |          8        0.08       97.76
          W |        179        1.79       99.55
          X |          1        0.01       99.56
          Y |         30        0.30       99.86
          Z |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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