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

        vin |
character(1 |
          ) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         14        0.14        0.14
          1 |      4,550       45.50       45.64
          2 |        962        9.62       55.26
          3 |        604        6.04       61.30
          4 |        542        5.42       66.72
          5 |        461        4.61       71.33
          6 |          7        0.07       71.40
          7 |          2        0.02       71.42
          8 |          4        0.04       71.46
          9 |        390        3.90       75.36
          A |          7        0.07       75.43
          B |          1        0.01       75.44
          C |         14        0.14       75.58
          D |          6        0.06       75.64
          E |          1        0.01       75.65
          F |          5        0.05       75.70
          G |          2        0.02       75.72
          H |          5        0.05       75.77
          J |      1,653       16.53       92.30
          K |        249        2.49       94.79
          L |         38        0.38       95.17
          M |         11        0.11       95.28
          N |          7        0.07       95.35
          R |          6        0.06       95.41
          S |         48        0.48       95.89
          T |          5        0.05       95.94
          U |          1        0.01       95.95
          V |          7        0.07       96.02
          W |        311        3.11       99.13
          Y |         54        0.54       99.67
          Z |         33        0.33      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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