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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         22        0.22        0.22
          1 |      5,447       54.47       54.69
          2 |        926        9.26       63.95
          3 |        283        2.83       66.78
          4 |        344        3.44       70.22
          5 |         19        0.19       70.41
          6 |         25        0.25       70.66
          7 |          9        0.09       70.75
          8 |          9        0.09       70.84
          9 |        365        3.65       74.49
          A |         15        0.15       74.64
          B |         18        0.18       74.82
          C |        145        1.45       76.27
          D |         17        0.17       76.44
          E |         19        0.19       76.63
          F |         82        0.82       77.45
          G |          4        0.04       77.49
          H |         23        0.23       77.72
          I |          3        0.03       77.75
          J |      1,715       17.15       94.90
          K |        142        1.42       96.32
          L |          2        0.02       96.34
          M |          5        0.05       96.39
          N |          6        0.06       96.45
          P |          3        0.03       96.48
          R |         19        0.19       96.67
          S |         35        0.35       97.02
          T |         37        0.37       97.39
          U |          8        0.08       97.47
          V |         14        0.14       97.61
          W |        173        1.73       99.34
          X |          1        0.01       99.35
          Y |         50        0.50       99.85
          Z |         14        0.14       99.99
          f |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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