Frequencies for first 10,000 rows of vin_3 variable in vehicle dataset :

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        144        1.44        1.44
          1 |      1,260       12.60       14.04
          2 |        886        8.86       22.90
          3 |        894        8.94       31.84
          4 |        971        9.71       41.55
          5 |        149        1.49       43.04
          6 |        386        3.86       46.90
          7 |        206        2.06       48.96
          8 |        230        2.30       51.26
          9 |        452        4.52       55.78
          A |        804        8.04       63.82
          B |        129        1.29       65.11
          C |        510        5.10       70.21
          D |        219        2.19       72.40
          E |        149        1.49       73.89
          F |         59        0.59       74.48
          G |        212        2.12       76.60
          H |        108        1.08       77.68
          J |         34        0.34       78.02
          K |        147        1.47       79.49
          L |        111        1.11       80.60
          M |        480        4.80       85.40
          N |        212        2.12       87.52
          P |         77        0.77       88.29
          Q |          5        0.05       88.34
          R |         15        0.15       88.49
          S |        104        1.04       89.53
          T |        632        6.32       95.85
          U |        189        1.89       97.74
          V |         59        0.59       98.33
          W |         77        0.77       99.10
          X |         52        0.52       99.62
          Y |         29        0.29       99.91
          Z |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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