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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         39        0.39        0.39
          1 |      5,304       53.04       53.43
          2 |        790        7.90       61.33
          3 |        226        2.26       63.59
          4 |        317        3.17       66.76
          5 |         23        0.23       66.99
          6 |         38        0.38       67.37
          7 |         22        0.22       67.59
          8 |         26        0.26       67.85
          9 |        410        4.10       71.95
          A |          6        0.06       72.01
          B |         24        0.24       72.25
          C |        170        1.70       73.95
          D |         15        0.15       74.10
          E |         25        0.25       74.35
          F |        110        1.10       75.45
          G |         12        0.12       75.57
          H |         30        0.30       75.87
          J |      1,892       18.92       94.79
          K |        128        1.28       96.07
          L |          9        0.09       96.16
          M |          7        0.07       96.23
          N |          2        0.02       96.25
          P |         10        0.10       96.35
          R |         52        0.52       96.87
          S |         43        0.43       97.30
          T |         42        0.42       97.72
          U |          9        0.09       97.81
          V |         19        0.19       98.00
          W |        147        1.47       99.47
          X |          4        0.04       99.51
          Y |         41        0.41       99.92
          Z |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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