Frequencies for first 10,000 rows of vin_10 variable in vehicle dataset :

     vin_10 |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      1,800       18.00       18.00
          0 |      4,582       45.82       63.82
          1 |        291        2.91       66.73
          2 |        241        2.41       69.14
          3 |        275        2.75       71.89
          4 |        265        2.65       74.54
          5 |        276        2.76       77.30
          6 |        273        2.73       80.03
          7 |        279        2.79       82.82
          8 |        234        2.34       85.16
          9 |      1,452       14.52       99.68
          A |          2        0.02       99.70
          E |          1        0.01       99.71
          F |          1        0.01       99.72
          L |          1        0.01       99.73
          O |         23        0.23       99.96
          S |          1        0.01       99.97
          U |          1        0.01       99.98
          Y |          1        0.01       99.99
          Z |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016