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

      vin_1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        206        2.06        2.06
          1 |      1,696       16.96       19.02
          2 |        706        7.06       26.08
          3 |        593        5.93       32.01
          4 |        508        5.08       37.09
          5 |        207        2.07       39.16
          6 |        341        3.41       42.57
          7 |        182        1.82       44.39
          8 |        224        2.24       46.63
          9 |        818        8.18       54.81
          A |        174        1.74       56.55
          B |        132        1.32       57.87
          C |        995        9.95       67.82
          D |        152        1.52       69.34
          E |        148        1.48       70.82
          F |        573        5.73       76.55
          G |        167        1.67       78.22
          H |        249        2.49       80.71
          I |          3        0.03       80.74
          J |        111        1.11       81.85
          K |        199        1.99       83.84
          L |        106        1.06       84.90
          M |         38        0.38       85.28
          N |         43        0.43       85.71
          O |          5        0.05       85.76
          P |        162        1.62       87.38
          Q |          1        0.01       87.39
          R |        338        3.38       90.77
          S |        290        2.90       93.67
          T |        321        3.21       96.88
          U |         28        0.28       97.16
          V |         89        0.89       98.05
          W |         90        0.90       98.95
          X |         55        0.55       99.50
          Y |         12        0.12       99.62
          Z |         38        0.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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