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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         11        0.11        0.11
          1 |      5,450       54.50       54.61
          2 |        879        8.79       63.40
          3 |        296        2.96       66.36
          4 |        467        4.67       71.03
          5 |         56        0.56       71.59
          6 |         18        0.18       71.77
          7 |          5        0.05       71.82
          8 |         10        0.10       71.92
          9 |        409        4.09       76.01
          A |          2        0.02       76.03
          B |         11        0.11       76.14
          C |         88        0.88       77.02
          D |         11        0.11       77.13
          E |         10        0.10       77.23
          F |         48        0.48       77.71
          G |          5        0.05       77.76
          H |          8        0.08       77.84
          J |      1,799       17.99       95.83
          K |        131        1.31       97.14
          L |          4        0.04       97.18
          M |          1        0.01       97.19
          N |          4        0.04       97.23
          O |          1        0.01       97.24
          P |          3        0.03       97.27
          R |         17        0.17       97.44
          S |         30        0.30       97.74
          T |         14        0.14       97.88
          U |          6        0.06       97.94
          V |          7        0.07       98.01
          W |        148        1.48       99.49
          X |          2        0.02       99.51
          Y |         40        0.40       99.91
          Z |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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