Frequencies for first 10,000 rows of vin_5 variable in vehicle dataset :

      vin_5 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |          2        0.02        0.02
          0 |         92        0.92        0.94
          1 |         52        0.52        1.46
          2 |         56        0.56        2.02
          3 |         60        0.60        2.62
          4 |        101        1.01        3.63
          5 |         48        0.48        4.11
          6 |         28        0.28        4.39
          7 |         58        0.58        4.97
          8 |         40        0.40        5.37
          9 |        370        3.70        9.07
          A |        520        5.20       14.27
          B |        511        5.11       19.38
          C |        796        7.96       27.34
          D |        797        7.97       35.31
          E |        344        3.44       38.75
          F |        538        5.38       44.13
          G |        279        2.79       46.92
          H |        236        2.36       49.28
          J |        287        2.87       52.15
          K |        414        4.14       56.29
          L |        316        3.16       59.45
          M |        391        3.91       63.36
          N |        394        3.94       67.30
          P |        909        9.09       76.39
          Q |          1        0.01       76.40
          R |        434        4.34       80.74
          S |        443        4.43       85.17
          T |        269        2.69       87.86
          U |        375        3.75       91.61
          V |        150        1.50       93.11
          W |        171        1.71       94.82
          X |        271        2.71       97.53
          Y |        144        1.44       98.97
          Z |        101        1.01       99.98
          b |          1        0.01       99.99
          u |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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