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 |      4,624       46.24       46.45
          2 |        964        9.64       56.09
          3 |        523        5.23       61.32
          4 |        511        5.11       66.43
          5 |        481        4.81       71.24
          6 |         13        0.13       71.37
          7 |          1        0.01       71.38
          8 |          2        0.02       71.40
          9 |        355        3.55       74.95
          A |          6        0.06       75.01
          B |          1        0.01       75.02
          C |         11        0.11       75.13
          D |          1        0.01       75.14
          E |          2        0.02       75.16
          F |          8        0.08       75.24
          G |          1        0.01       75.25
          H |          1        0.01       75.26
          I |          1        0.01       75.27
          J |      1,719       17.19       92.46
          K |        276        2.76       95.22
          L |         25        0.25       95.47
          M |          7        0.07       95.54
          N |          3        0.03       95.57
          P |          1        0.01       95.58
          R |          7        0.07       95.65
          S |         44        0.44       96.09
          U |          1        0.01       96.10
          V |          5        0.05       96.15
          W |        302        3.02       99.17
          X |          1        0.01       99.18
          Y |         52        0.52       99.70
          Z |         30        0.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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