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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        113        1.13        1.13
          1 |      2,850       28.50       29.63
          2 |        554        5.54       35.17
          3 |        354        3.54       38.71
          4 |        330        3.30       42.01
          5 |        136        1.36       43.37
          6 |        201        2.01       45.38
          7 |        129        1.29       46.67
          8 |        139        1.39       48.06
          9 |        852        8.52       56.58
          A |        113        1.13       57.71
          B |         56        0.56       58.27
          C |        638        6.38       64.65
          D |         82        0.82       65.47
          E |        112        1.12       66.59
          F |        369        3.69       70.28
          G |        103        1.03       71.31
          H |        186        1.86       73.17
          I |          9        0.09       73.26
          J |      1,472       14.72       87.98
          K |         92        0.92       88.90
          L |         58        0.58       89.48
          M |         24        0.24       89.72
          N |         29        0.29       90.01
          O |          1        0.01       90.02
          P |         88        0.88       90.90
          Q |          1        0.01       90.91
          R |        251        2.51       93.42
          S |        168        1.68       95.10
          T |        186        1.86       96.96
          U |         28        0.28       97.24
          V |         66        0.66       97.90
          W |        137        1.37       99.27
          X |         22        0.22       99.49
          Y |         25        0.25       99.74
          Z |         26        0.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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