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

      vin_3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         59        0.59        0.59
          1 |        990        9.90       10.49
          2 |        637        6.37       16.86
          3 |        654        6.54       23.40
          4 |        894        8.94       32.34
          5 |         43        0.43       32.77
          6 |        239        2.39       35.16
          7 |        257        2.57       37.73
          8 |        235        2.35       40.08
          9 |        431        4.31       44.39
          A |        864        8.64       53.03
          B |        171        1.71       54.74
          C |        481        4.81       59.55
          D |        357        3.57       63.12
          E |        191        1.91       65.03
          F |         55        0.55       65.58
          G |        368        3.68       69.26
          H |        111        1.11       70.37
          J |         37        0.37       70.74
          K |        220        2.20       72.94
          L |         62        0.62       73.56
          M |        673        6.73       80.29
          N |        426        4.26       84.55
          P |        115        1.15       85.70
          Q |          1        0.01       85.71
          R |         17        0.17       85.88
          S |         70        0.70       86.58
          T |        813        8.13       94.71
          U |        227        2.27       96.98
          V |         63        0.63       97.61
          W |        100        1.00       98.61
          X |         98        0.98       99.59
          Y |         17        0.17       99.76
          Z |         24        0.24      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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