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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          7        0.07        0.07
          0 |         50        0.50        0.57
          1 |      4,699       46.99       47.56
          2 |        635        6.35       53.91
          3 |        183        1.83       55.74
          4 |        237        2.37       58.11
          5 |         44        0.44       58.55
          6 |        109        1.09       59.64
          7 |         51        0.51       60.15
          8 |         46        0.46       60.61
          9 |        414        4.14       64.75
          A |         37        0.37       65.12
          B |         40        0.40       65.52
          C |        318        3.18       68.70
          D |         36        0.36       69.06
          E |         59        0.59       69.65
          F |        172        1.72       71.37
          G |         28        0.28       71.65
          H |         78        0.78       72.43
          I |          1        0.01       72.44
          J |      2,023       20.23       92.67
          K |        136        1.36       94.03
          L |         10        0.10       94.13
          M |         11        0.11       94.24
          N |         17        0.17       94.41
          O |          4        0.04       94.45
          P |         23        0.23       94.68
          R |         93        0.93       95.61
          S |         80        0.80       96.41
          T |         97        0.97       97.38
          U |         19        0.19       97.57
          V |         31        0.31       97.88
          W |        160        1.60       99.48
          X |          7        0.07       99.55
          Y |         36        0.36       99.91
          Z |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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