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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         95        0.95        0.95
          1 |      3,128       31.28       32.23
          2 |        542        5.42       37.65
          3 |        366        3.66       41.31
          4 |        288        2.88       44.19
          5 |        105        1.05       45.24
          6 |        214        2.14       47.38
          7 |        119        1.19       48.57
          8 |        110        1.10       49.67
          9 |        660        6.60       56.27
          A |         85        0.85       57.12
          B |         76        0.76       57.88
          C |        579        5.79       63.67
          D |         87        0.87       64.54
          E |        102        1.02       65.56
          F |        363        3.63       69.19
          G |         98        0.98       70.17
          H |        176        1.76       71.93
          I |          1        0.01       71.94
          J |      1,636       16.36       88.30
          K |        107        1.07       89.37
          L |         44        0.44       89.81
          M |         26        0.26       90.07
          N |         23        0.23       90.30
          P |         75        0.75       91.05
          Q |          1        0.01       91.06
          R |        206        2.06       93.12
          S |        148        1.48       94.60
          T |        197        1.97       96.57
          U |         46        0.46       97.03
          V |         63        0.63       97.66
          W |        151        1.51       99.17
          X |         21        0.21       99.38
          Y |         36        0.36       99.74
          Z |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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