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

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        530        5.30        5.30
          1 |      1,061       10.61       15.91
          2 |      1,218       12.18       28.09
          3 |        802        8.02       36.11
          4 |        944        9.44       45.55
          5 |        572        5.72       51.27
          6 |        682        6.82       58.09
          7 |        305        3.05       61.14
          8 |        469        4.69       65.83
          9 |        923        9.23       75.06
          A |        557        5.57       80.63
          B |        131        1.31       81.94
          C |        222        2.22       84.16
          D |        118        1.18       85.34
          E |        143        1.43       86.77
          F |         85        0.85       87.62
          G |         27        0.27       87.89
          H |         15        0.15       88.04
          I |          7        0.07       88.11
          J |          7        0.07       88.18
          K |         35        0.35       88.53
          L |        187        1.87       90.40
          M |        192        1.92       92.32
          N |         53        0.53       92.85
          O |          1        0.01       92.86
          P |         42        0.42       93.28
          Q |          8        0.08       93.36
          R |         34        0.34       93.70
          S |         95        0.95       94.65
          T |        293        2.93       97.58
          U |         65        0.65       98.23
          V |         20        0.20       98.43
          W |         52        0.52       98.95
          X |         11        0.11       99.06
          Y |         70        0.70       99.76
          Z |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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