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

        vin |
character(1 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         21        0.21        0.21
          1 |      4,620       46.20       46.41
          2 |        964        9.64       56.05
          3 |        524        5.24       61.29
          4 |        510        5.10       66.39
          5 |        479        4.79       71.18
          6 |         13        0.13       71.31
          7 |          1        0.01       71.32
          8 |          2        0.02       71.34
          9 |        356        3.56       74.90
          A |          6        0.06       74.96
          B |          1        0.01       74.97
          C |         11        0.11       75.08
          E |          2        0.02       75.10
          F |          8        0.08       75.18
          G |          1        0.01       75.19
          H |          1        0.01       75.20
          I |          1        0.01       75.21
          J |      1,728       17.28       92.49
          K |        273        2.73       95.22
          L |         22        0.22       95.44
          M |          7        0.07       95.51
          N |          3        0.03       95.54
          P |          1        0.01       95.55
          R |          6        0.06       95.61
          S |         45        0.45       96.06
          U |          1        0.01       96.07
          V |          5        0.05       96.12
          W |        304        3.04       99.16
          X |          1        0.01       99.17
          Y |         52        0.52       99.69
          Z |         31        0.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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